title: An unusual cause of failure of in vitro fertilization: report of a case.
mesh_terms: D000328:Adult; D003076:Coitus Interruptus; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D008297:Male; D008418:Masturbation; D010349:Patient Compliance; D012661:Semen / Q000382:microbiology*