Klinefelter's syndrome.
Wilkes
A J
AJ
D006801:Humans; D007713:Klinefelter Syndrome / Q000188:drug therapy / Q000473:pathology*; D008297:Male; D010879:Piperazines / Q000627:therapeutic use; D011687:Purines; D000068677:Sildenafil Citrate; D013450:Sulfones
D010879:Piperazines; D011687:Purines; D013450:Sulfones; D000068677:Sildenafil Citrate