When impotence leads contraception.
Watts
J
J
D003267:Contraception; D003271:Contraceptive Agents, Female / Q000627:therapeutic use; D007172:Erectile Dysfunction / Q000188:drug therapy*; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male; D010879:Piperazines / Q000627:therapeutic use; D011287:Prejudice; D011687:Purines; D000068677:Sildenafil Citrate; D013450:Sulfones
D003271:Contraceptive Agents, Female; D010879:Piperazines; D011687:Purines; D013450:Sulfones; D000068677:Sildenafil Citrate