How should we perform the human chorionic gonadotrophin (hCG) stimulation test?
D000375:Aging; D006063:Chorionic Gonadotropin / Q000008:administration & dosage; D002940:Circadian Rhythm; D006801:Humans; D008297:Male; D013739:Testosterone / Q000097:blood; D013997:Time Factors
D006063:Chorionic Gonadotropin; D013739:Testosterone