[Clinical trial of gossypol as a male contraceptive: a randomized controlled study].
D000328:Adult; D002986:Clinical Trials as Topic; D003267:Contraception / Q000379:methods*; D003272:Contraceptive Agents, Male; D004311:Double-Blind Method; D006072:Gossypol; D006801:Humans; D008297:Male; D011188:Potassium / Q000097:blood; D011446:Prospective Studies; D011897:Random Allocation
D003272:Contraceptive Agents, Male; D006072:Gossypol; D011188:Potassium