How is postvasectomy sterility confirmed?
D019411:Clinical Laboratory Techniques; D003267:Contraception; D003933:Diagnosis; D005069:Evaluation Studies as Topic; D005193:Family Planning Services; D013076:Sperm Count; D013245:Sterilization, Reproductive; D014659:Vasectomy
Contraception; Contraceptive Effectiveness; Examinations And Diagnoses; Family Planning; Laboratory Examinations And Diagnoses; Laboratory Procedures; Male Sterilization; Sperm Count; Sterilization, Sexual; Use-effectiveness; Vasectomy