[Studies on male infertility. I. Statistical studies on prognosis and etiology of male infertility].
D000328:Adult; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007248:Infertility, Male / Q000175:diagnosis* / Q000453:epidemiology / Q000209:etiology*; D008297:Male; D008875:Middle Aged; D011247:Pregnancy; D011379:Prognosis