Appendix E: Classifications for Barrier Methods

At a glance

This page includes recommendations for health care providers for the use of barrier methods for persons who have certain characteristics or medical conditions. This information comes from the 2024 U.S. Medical Eligibility Criteria for Contraceptive Use (U.S. MEC).

Overview

Classifications for barrier contraceptive methods include those for condoms, which include external (male) condoms (latex or synthetic) and internal (female) condoms, spermicide and vaginal pH modulator, and diaphragm with spermicide and cervical cap with spermicide (Box E1) (Table E1).

Patients should be counseled that consistent and correct use of external (male) latex condoms reduces the risk for sexually transmitted infections (STIs), including HIV infection.[1] Use of internal (female) condoms can provide protection from transmission of STIs, although data are limited.[1] Patients also should be counseled that pre-exposure prophylaxis, when taken as prescribed, is highly effective for preventing HIV infection.[2]

Box E1. Categories for classifying barrier methods

U.S. MEC 1
A condition for which there is no restriction for the use of the contraceptive method
U.S. MEC 2
A condition for which the advantages of using the method generally outweigh the theoretical or proven risks
U.S. MEC 3
A condition for which the theoretical or proven risks usually outweigh the advantages of using the method
U.S. MEC 4
A condition that represents an unacceptable health risk if the contraceptive method is used

Abbreviation: U.S. MEC = U.S. Medical Eligibility Criteria for Contraceptive Use.

Table E1. Classifications for barrier methods, including condoms, spermicide and vaginal pH modulator, and diaphragm with spermicide and cervical cap with spermicide

Table E1. Classifications for barrier methods, including condoms, spermicide and vaginal pH modulator, and diaphragm with spermicide and cervical cap with spermicide
Condition Category Clarification/Evidence/Comment
Condom Spermicide/Vaginal pH modulator Diaphragm/Cap (with spermicide)
Personal Characteristics and Reproductive History
Pregnancy NA NA NA Clarification: None of these methods are relevant for contraception during known pregnancy. However, for persons who remain at risk for STIs or HIV infection during pregnancy, the correct and consistent use of condoms is recommended.
Age
a. Menarche to <40 years 1 1 1
b. ≥40 years 1 1 1
Parity
a. Nulliparous 1 1 1
b. Parous 1 1 2 Clarification: Risk for cervical cap failure is higher in parous persons than in nulliparous persons.
Postpartum (breastfeeding
and nonbreastfeeding)
a. <6 weeks postpartum 1 1 NA Clarification: Diaphragm and cap are unsuitable until uterine involution is complete.
b. ≥6 weeks postpartum 1 1 1
Postabortion (spontaneous
or induced)
a. First trimester abortion 1 1 1
b. Second trimester abortion 1 1 1 Clarification: Diaphragm and cap are unsuitable until 6 weeks after second trimester abortion.
c. Immediate postseptic abortion 1 1 1
Past ectopic pregnancy 1 1 1
History of pelvic surgery 1 1 1
Smoking
a. Age <35 years 1 1 1
b. Age ≥35 years
  i. <15 cigarettes per day 1 1 1
  ii. ≥15 cigarettes per day 1 1 1
Obesity
a. BMI ≥30 kg/m2 1 1 1
b. Menarche to <18 years and BMI ≥30 kg/m2 1 1 1
History of bariatric surgery
This condition is associated with
increased risk for adverse health
events as a result of pregnancy
(Box 3).
a. Restrictive procedures: decrease storage capacity of the stomach (vertical banded gastroplasty, laparoscopic adjustable gastric band, or laparoscopic sleeve gastrectomy) 1 1 1
b. Malabsorptive procedures: decrease absorption of nutrients and calories by shortening the functional length of the small intestine (Roux-en-Y gastric bypass or biliopancreatic diversion) 1 1 1
Surgery
a. Minor surgery without immobilization 1 1 1
b. Major surgery
   i. Without prolonged immobilization 1 1 1
   ii. With prolonged immobilization 1 1 1

Back to Top

Table E1. Classifications for barrier methods, including condoms, spermicide and vaginal pH modulator, and diaphragm with spermicide and cervical cap with spermicide
Condition Category Clarification/Evidence/Comment
Condom Spermicide/Vaginal pH modulator Diaphragm/Cap (with spermicide)
Cardiovascular Disease
Multiple risk factors for atherosclerotic cardiovascular disease (e.g., older age, smoking, diabetes, hypertension, low HDL, high LDL, or high triglyceride levels) 1 1 1
Hypertension
Systolic blood pressure ≥160 mm
Hg or diastolic blood pressure
≥100 mm Hg are associated with
increased risk for adverse health
events as a result of pregnancy
(Box 3).
a. Adequately controlled hypertension 1 1 1
b. Elevated blood pressure levels
(properly taken measurements)
  i. Systolic 140–159 mm Hg or diastolic 90–99 mm Hg 1 1 1
  ii. Systolic ≥160 mm Hg or diastolic ≥100 mm Hg 1 1 1
c. Vascular disease 1 1 1
History of high blood pressure during pregnancy (when current blood pressure is measurable and normal) 1 1 1
Deep venous thrombosis/
Pulmonary embolism

This condition is associated with
increased risk for adverse health
events as a result of pregnancy
(Box 3).
a. Current or history of DVT/PE, receiving anticoagulant therapy (therapeutic dose) (e.g., acute DVT/PE or long-term therapeutic dose) 1 1 1
b. History of DVT/PE, receiving
anticoagulant therapy
(prophylactic dose)
  i. Higher risk for recurrent DVT/PE (one or more risk factors) 1 1 1
• Thrombophilia (e.g., factor V Leiden mutation; prothrombin gene mutation; protein S, protein C, and antithrombin deficiencies; or antiphospholipid syndrome)
• Active cancer (metastatic, receiving therapy, or within 6 months after clinical remission), excluding nonmelanoma skin cancer
• History of recurrent DVT/PE
  ii. Lower risk for recurrent DVT/PE (no risk factors) 1 1 1
c. History of DVT/PE, not receiving
anticoagulant therapy
  i. Higher risk for recurrent DVT/PE (one or more risk factors) 1 1 1
• History of estrogen-associated DVT/PE
• Pregnancy-associated DVT/PE
• Idiopathic DVT/PE
• Thrombophilia (e.g., factor V Leiden mutation; prothrombin gene mutation; protein S, protein C, and antithrombin deficiencies; or antiphospholipid syndrome)
• Active cancer (metastatic,
receiving therapy, or within 6 months after clinical remission), excluding nonmelanoma skin
cancer
• History of recurrent DVT/PE
  ii. Lower risk for recurrent DVT/PE (no risk factors) 1 1 1
d. Family history (first-degree relatives) 1 1 1
Thrombophilia (e.g., factor V Leiden mutation; prothrombin gene mutation; protein S, protein C, and antithrombin deficiencies; or antiphospholipid syndrome)
This condition is associated with increased risk for adverse health events as a result of pregnancy (Box 3).
1 1 1 Clarification: Routine screening in the general population before contraceptive initiation is not recommended.
Superficial venous disorders
a. Varicose veins 1 1 1
b. Superficial venous thrombosis (acute or history) 1 1 1
Current and history of ischemic heart disease
This condition is associated with increased risk for adverse health events as a result of pregnancy (Box 3).
1 1 1
Stroke (history of cerebrovascular accident)
This condition is associated with increased risk for adverse health events as a result of pregnancy (Box 3).
1 1 1
Valvular heart disease
Complicated valvular heart
disease is associated with
increased risk for adverse health
events as a result of pregnancy
(Box 3).
a. Uncomplicated 1 1 1
b. Complicated (pulmonary hypertension, risk for atrial fibrillation, or history of subacute bacterial endocarditis) 1 1 2
Peripartum cardiomyopathy
This condition is associated with
increased risk for adverse health
events as a result of pregnancy
(Box 3).
a. Normal or mildly impaired
cardiac function (New York Heart
Association Functional Class I or
II: no limitation of activities or
slight, mild limitation of activity) [3]
  i. <6 months 1 1 1
  ii. ≥6 months 1 1 1
b. Moderately or severely impaired cardiac function (New York Heart Association Functional Class III or IV: marked limitation of activity or should be at complete rest) [3] 1 1 1

Back to Top

Table E1. Classifications for barrier methods, including condoms, spermicide and vaginal pH modulator, and diaphragm with spermicide and cervical cap with spermicide
Condition Category Clarification/Evidence/Comment
Condom Spermicide/Vaginal pH modulator Diaphragm/Cap (with spermicide)
Renal Disease
Chronic kidney disease
This condition is associated with
increased risk for adverse health
events as a result of pregnancy
(Box 3).
a. Current nephrotic syndrome 1 1 1
b. Hemodialysis 1 1 1
c. Peritoneal dialysis 1 1 1

Back to Top

Table E1. Classifications for barrier methods, including condoms, spermicide and vaginal pH modulator, and diaphragm with spermicide and cervical cap with spermicide
Condition Category Clarification/Evidence/Comment
Condom Spermicide/Vaginal pH modulator Diaphragm/Cap (with spermicide)
Rheumatic Diseases
Systemic lupus erythematosus
This condition is associated with
increased risk for adverse health
events as a result of pregnancy
(Box 3).
a. Positive (or unknown) antiphospholipid antibodies 1 1 1
b. Severe thrombocytopenia 1 1 1
c. Immunosuppressive therapy 1 1 1
d. None of the above 1 1 1
Rheumatoid arthritis
a. Not receiving immunosuppressive therapy 1 1 1
b. Receiving immunosuppressive therapy 1 1 1

Back to Top

Table E1. Classifications for barrier methods, including condoms, spermicide and vaginal pH modulator, and diaphragm with spermicide and cervical cap with spermicide
Condition Category Clarification/Evidence/Comment
Condom Spermicide/Vaginal pH modulator Diaphragm/Cap (with spermicide)
Neurologic Conditions
Headaches
a. Nonmigraine (mild or severe) 1 1 1
b. Migraine
  i. Without aura (includes menstrual migraine) 1 1 1 Comment: Menstrual migraine is a subtype of migraine without aura. For more information see the International Headache Society’s International Classification of Headache Disorders, 3rd ed. (https://ichd-3.org).[4]
  ii. With aura 1 1 1
Epilepsy
This condition is associated with increased risk for adverse health events as a result of pregnancy (Box 3).
1 1 1
Multiple sclerosis
a. Without prolonged immobility 1 1 1
b. With prolonged immobility 1 1 1

Back to Top

Table E1. Classifications for barrier methods, including condoms, spermicide and vaginal pH modulator, and diaphragm with spermicide and cervical cap with spermicide
Condition Category Clarification/Evidence/Comment
Condom Spermicide/Vaginal pH modulator Diaphragm/Cap (with spermicide)
Depressive Disorders
Depressive disorders 1 1 1

Back to Top

Table E1. Classifications for barrier methods, including condoms, spermicide and vaginal pH modulator, and diaphragm with spermicide and cervical cap with spermicide
Condition Category Clarification/Evidence/Comment
Condom Spermicide/Vaginal pH modulator Diaphragm/Cap (with spermicide)
Reproductive Tract Infections and Disorders
Unexplained vaginal bleeding
(suspicious for serious condition) before evaluation
1 1 1 Clarification: If pregnancy or an underlying pathological condition (e.g., pelvic malignancy) is suspected, it must be evaluated and the category adjusted after evaluation.
Endometriosis 1 1 1
Benign ovarian tumors (including cysts) 1 1 1
Severe dysmenorrhea 1 1 1
Gestational trophoblastic disease
This condition is associated with
increased risk for adverse health
events as a result of pregnancy
(Box 3).
a. Suspected gestational
trophoblastic disease (immediate
postevacuation)
  i. Uterine size first trimester 1 1 1
  ii. Uterine size second trimester 1 1 1
b. Confirmed gestational
trophoblastic disease (after initial
evacuation and during
monitoring)
  i. Undetectable or nonpregnant β–hCG levels 1 1 1
  ii. Decreasing β–hCG levels 1 1 1
  iii. Persistently elevated β-hCG levels or malignant disease, with no evidence or suspicion of intrauterine disease 1 1 1
  iv. Persistently elevated β-hCG levels or malignant disease, with evidence or suspicion of intrauterine disease 1 1 1
Cervical ectropion 1 1 1
Cervical intraepithelial neoplasia 1 1 1 Clarification: The cap should not be used. Diaphragm use has no restrictions.
Cervical cancer (awaiting treatment) 1 Vaginal pH modulator: 1
Spermicide: 2
1 Clarification: The cap should not be used. Diaphragm use has no restrictions.
Comment: Repeated and high-dose use of the spermicide nonoxynol-9 can cause vaginal and cervical irritation or abrasions.
Breast disease
Breast cancer is associated with
increased risk for adverse health
events as a result of pregnancy
(Box 3).
a. Undiagnosed mass 1 1 1
b. Benign breast disease 1 1 1
c. Family history of cancer 1 1 1
d. Breast cancer
  i. Current 1 1 1
  ii. Past and no evidence of current disease for 5 years 1 1 1
Endometrial hyperplasia 1 1 1
Endometrial cancer
This condition is associated with increased risk for adverse health events as a result of pregnancy (Box 3).
1 1 1
Ovarian cancer
This condition is associated with increased risk for adverse health events as a result of pregnancy (Box 3).
1 1 1
Uterine fibroids 1 1 1
Anatomical abnormalities 1 1 NA Clarification: The diaphragm cannot be used in certain cases of prolapse. Cap use is not appropriate for a person with markedly distorted cervical anatomy.
Pelvic inflammatory disease
a. Current PID 1 1 1
b. Past PID
  i. With subsequent pregnancy 1 1 1
  ii. Without subsequent pregnancy 1 1 1
Sexually transmitted infections
a. Current purulent cervicitis or chlamydial infection or gonococcal infection 1 1 1
b. Vaginitis (including Trichomonas vaginalis and bacterial vaginosis) 1 1 1
c. Other factors related to STIs 1 1 1

Back to Top

Table E1. Classifications for barrier methods, including condoms, spermicide and vaginal pH modulator, and diaphragm with spermicide and cervical cap with spermicide
Condition Category Clarification/Evidence/Comment
Condom Spermicide/Vaginal pH modulator Diaphragm/Cap (with spermicide)
HIV
High risk for HIV infection 1 Vaginal pH modulator: 1
Spermicide: 4
4 Evidence: Repeated and high-dose use of the spermicide nonoxynol-9 was associated with increased risk for genital lesions, which might increase the risk for HIV infection.[5]
Comment: Diaphragm and cap use is assigned category 4 because of concerns about the spermicide, not the diaphragm or cap.
HIV infection
For persons with HIV infection who are not clinically well or not receiving ARV therapy, this condition is associated with increased risk for adverse health events as a result of pregnancy (Box 3).
1 Vaginal pH modulator: 1
Spermicide: 3
3 Comment: Use of spermicides, including with diaphragms and caps, can disrupt the cervical mucosa, which might increase viral shedding and HIV transmission to noninfected sex partners.

Back to Top

Table E1. Classifications for barrier methods, including condoms, spermicide and vaginal pH modulator, and diaphragm with spermicide and cervical cap with spermicide
Condition Category Clarification/Evidence/Comment
Condom Spermicide/Vaginal pH modulator Diaphragm/Cap (with spermicide)
Other Infections
Schistosomiasis
Schistosomiasis with fibrosis of
the liver is associated with
increased risk for adverse health
events as a result of pregnancy
(Box 3).
a. Uncomplicated 1 1 1
b. Fibrosis of the liver 1 1 1
Tuberculosis
This condition is associated with
increased risk for adverse health
events as a result of pregnancy
(Box 3).
a. Nonpelvic 1 1 1
b. Pelvic 1 1 1
Malaria 1 1 1
History of toxic shock syndrome 1 1 3 Comment: Toxic shock syndrome has been reported in association with contraceptive sponge and diaphragm use.
Urinary tract infection 1 Vaginal pH modulator: 2
Spermicide: 1
2 Comment: Use of diaphragms and spermicides might increase risk for urinary tract infection.

Back to Top

Table E1. Classifications for barrier methods, including condoms, spermicide and vaginal pH modulator, and diaphragm with spermicide and cervical cap with spermicide
Condition Category Clarification/Evidence/Comment
Condom Spermicide/Vaginal pH modulator Diaphragm/Cap (with spermicide)
Endocrine Conditions
Diabetes
Insulin-dependent diabetes;
diabetes with nephropathy,
retinopathy, or neuropathy;
diabetes with other vascular
disease; or diabetes of >20 years’
duration are associated with
increased risk for adverse health
events as a result of pregnancy
(Box 3).
a. History of gestational disease 1 1 1
b. Nonvascular disease
  i. Non-insulin dependent 1 1 1
  ii. Insulin dependent 1 1 1
c. Nephropathy, retinopathy, or neuropathy 1 1 1
d. Other vascular disease or diabetes of >20 years’ duration 1 1 1
Thyroid disorders
a. Simple goiter 1 1 1
b. Hyperthyroid 1 1 1
c. Hypothyroid 1 1 1

Back to Top

Table E1. Classifications for barrier methods, including condoms, spermicide and vaginal pH modulator, and diaphragm with spermicide and cervical cap with spermicide
Condition Category Clarification/Evidence/Comment
Condom Spermicide/Vaginal pH modulator Diaphragm/Cap (with spermicide)
Gastrointestinal Conditions
Inflammatory bowel disease (ulcerative colitis or Crohn’s disease) 1 1 1
Gallbladder disease
a. Asymptomatic 1 1 1
b. Symptomatic
  i. Current 1 1 1
  ii. Treated by cholecystectomy 1 1 1
  iii. Medically treated 1 1 1
History of cholestasis
a. Pregnancy related 1 1 1
b. Past COC related 1 1 1
Viral hepatitis
a. Acute or flare 1 1 1
b. Chronic 1 1 1
Cirrhosis
Decompensated cirrhosis is
associated with increased risk for
adverse health events as a result
of pregnancy (Box 3).
a. Compensated (normal liver function) 1 1 1
b. Decompensated (impaired liver function) 1 1 1
Liver tumors
Hepatocellular adenoma and
malignant liver tumors are
associated with increased risk for
adverse health events as a result
of pregnancy (Box 3).
a. Benign
   i. Focal nodular hyperplasia 1 1 1
   ii. Hepatocellular adenoma 1 1 1
b. Malignant (hepatocellular carcinoma) 1 1 1

Back to Top

Table E1. Classifications for barrier methods, including condoms, spermicide and vaginal pH modulator, and diaphragm with spermicide and cervical cap with spermicide
Condition Category Clarification/Evidence/Comment
Condom Spermicide/Vaginal pH modulator Diaphragm/Cap (with spermicide)
Respiratory Conditions
Cystic fibrosis
This condition is associated with increased risk for adverse health events as a result of pregnancy (Box 3).
1 1 1

Back to Top

Table E1. Classifications for barrier methods, including condoms, spermicide and vaginal pH modulator, and diaphragm with spermicide and cervical cap with spermicide
Condition Category Clarification/Evidence/Comment
Condom Spermicide/Vaginal pH modulator Diaphragm/Cap (with spermicide)
Hematologic Conditions
Thalassemia 1 1 1
Sickle cell disease
This condition is associated with increased risk for adverse health events as a result of pregnancy (Box 3).
1 1 1
Iron deficiency anemia 1 1 1

Back to Top

Table E1. Classifications for barrier methods, including condoms, spermicide and vaginal pH modulator, and diaphragm with spermicide and cervical cap with spermicide
Condition Category Clarification/Evidence/Comment
Condom Spermicide/Vaginal pH modulator Diaphragm/Cap (with spermicide)
Solid Organ Transplantation
Solid organ transplantation
This condition is associated with
increased risk for adverse health
events as a result of pregnancy
(Box 3).
a. No graft failure 1 1 1
b. Graft failure 1 1 1

Back to Top

Table E1. Classifications for barrier methods, including condoms, spermicide and vaginal pH modulator, and diaphragm with spermicide and cervical cap with spermicide
Condition Category Clarification/Evidence/Comment
Condom Spermicide/Vaginal pH modulator Diaphragm/Cap (with spermicide)
Drug Interactions
Antiretrovirals used for
prevention (PrEP) or treatment
of HIV infection
Clarification: No drug interaction between ARV therapy and barrier method use is known. HIV infection is classified as category 1 for vaginal pH modulator and category 3 for spermicide and diaphragm and cap use (see recommendations for HIV infection). High risk for HIV infection is classified as category 1 for vaginal pH modulator and category 4 for spermicide and diaphragm or cap (see recommendations for High risk for HIV infection).
a. Nucleoside reverse
transcriptase inhibitors (NRTIs)
  i. Abacavir (ABC) 1 1/3/4 3/4
  ii. Tenofovir (TDF) 1 1/3/4 3/4
  iii. Zidovudine (AZT) 1 1/3/4 3/4
  iv. Lamivudine (3TC) 1 1/3/4 3/4
  v. Didanosine (DDI) 1 1/3/4 3/4
  vi. Emtricitabine (FTC) 1 1/3/4 3/4
  vii. Stavudine (D4T) 1 1/3/4 3/4
b. Nonnucleoside reverse
transcriptase inhibitors (NNRTIs)
  i. Efavirenz (EFV) 1 1/3/4 3/4
  ii. Etravirine (ETR) 1 1/3/4 3/4
  iii. Nevirapine (NVP) 1 1/3/4 3/4
  iv. Rilpivirine (RPV) 1 1/3/4 3/4
c. Ritonavir-boosted protease
inhibitors
  i. Ritonavir-boosted atazanavir (ATV/r) 1 1/3/4 3/4
  ii. Ritonavir-boosted darunavir (DRV/r) 1 1/3/4 3/4
  iii. Ritonavir-boosted fosamprenavir (FPV/r) 1 1/3/4 3/4
  iv. Ritonavir-boosted lopinavir (LPV/r) 1 1/3/4 3/4
  v. Ritonavir-boosted saquinavir (SQV/r) 1 1/3/4 3/4
  vi. Ritonavir-boosted tipranavir (TPV/r) 1 1/3/4 3/4
d. Protease inhibitors without ritonavir
  i. Atazanavir (ATV) 1 1/3/4 3/4
  ii. Fosamprenavir (FPV) 1 1/3/4 3/4
  iii. Indinavir (IDV) 1 1/3/4 3/4
  iv. Nelfinavir (NFV) 1 1/3/4 3/4
e. CCR5 co-receptor antagonists
  i. Maraviroc (MVC) 1 1/3/4 3/4
f. HIV integrase strand transfer
inhibitors
  i. Raltegravir (RAL) 1 1/3/4 3/4
  ii. Dolutegravir (DTG) 1 1/3/4 3/4
  iii. Elvitegravir (EVG) 1 1/3/4 3/4
g. Fusion inhibitors
  i. Enfuvirtide 1 1/3/4 3/4
Anticonvulsant therapy
a. Certain anticonvulsants (phenytoin, carbamazepine, barbiturates, primidone, topiramate, or oxcarbazepine) 1 1 1
b. Lamotrigine 1 1 1
Antimicrobial therapy
a. Broad-spectrum antibiotics 1 1 1
b. Antifungals 1 1 1
c. Antiparasitics 1 1 1
d. Rifampin or rifabutin therapy 1 1 1
Psychotropic medications
a. Selective serotonin reuptake inhibitors (SSRIs) 1 1 1
St. John’s wort 1 1 1
Allergy to latex 3 1 3 Clarification: The condition of allergy to latex does not apply to plastic condoms or diaphragms.

Abbreviations: ARV = antiretroviral; BMI = body mass index; COC = combined oral contraceptive; DVT = deep venous thrombosis; hCG = human chorionic gonadotropin; HDL = high-density lipoprotein; LDL = low-density lipoprotein; NA = not applicable; PE = pulmonary embolism; PID = pelvic inflammatory disease; PrEP = pre-exposure prophylaxis; STI = sexually transmitted infection.

Back to Top

References

  1. Workowski KA, Bachmann LH, Chan PA, et al. Sexually transmitted infections treatment guidelines, 2021. MMWR Recomm Rep 2021;70(No. RR-4):1–187. PMID:34292926 https://doi.org/10.15585/mmwr.rr7004a1
  2. CDC. US Public Health Service preexposure prophylaxis for the prevention of HIV infection in the United States—2021 update: a clinical practice guideline. Atlanta, GA: US Department of Health and Human Services, CDC; 2021. /hiv/pdf/risk/prep/cdc-hiv-prep-guidelines-2021.pdf
  3. The Criteria Committee of the New York Heart Association. Nomenclature and criteria for diagnosis of diseases of the heart and great vessels. 9th ed. Boston, MA: Little, Brown and Co; 1994.
  4. Headache Classification Committee of the International Headache Society (IHS) The International Classification of Headache Disorders. 3rd ed. Cephalalgia 2018;38:1–211. https://www.ichd-3.org/wp-content/uploads/2018/01/The-International-Classification-of-Headache-Disorders-3rd-Edition-2018.pdf
  5. Wilkinson D, Ramjee G, Tholandi M, Rutherford G. Nonoxynol-9 for preventing vaginal acquisition of HIV infection by women from men. Cochrane Database Syst Rev 2002;2002:CD003936. PMID:12519622 https://doi.org/10.1002/14651858.CD003936
  6. Back to Top