title: Postvasectomy pregnancy (Letter).
authors.forename: S
authors.initials: S
authors.lastname: Marshall
mesh_terms: D019411:Clinical Laboratory Techniques; D003267:Contraception; D003268:Contraception Behavior; D003710:Demography; D003933:Diagnosis; D005069:Evaluation Studies as Topic; D005193:Family Planning Services; D005298:Fertility; D011153:Population; D011157:Population Dynamics; D011275:Pregnancy, Unwanted; D012725:Sexual Behavior; D013076:Sperm Count; D013245:Sterilization, Reproductive; D013521:Urologic Surgical Procedures, Male; D014659:Vasectomy
keywords: Contraception; Contraception Failure; Contraceptive Usage; Demographic Factors; Examinations And Diagnoses; Family Planning; Fertility; Laboratory Examinations And Diagnoses; Laboratory Procedures; Male Sterilization; Male Urologic Surgery; Population; Population Dynamics; Pregnancy, Unwanted; Recanalization; Reproductive Behavior; Sperm Count; Sterilization, Sexual; Use-effectiveness; Vasectomy--complications