Sildenafil citrate and sperm function.
Siegel
R L
RL
D007172:Erectile Dysfunction / Q000188:drug therapy*; D006801:Humans; D008297:Male; D010879:Piperazines / Q000009:adverse effects*; D011687:Purines; D000068677:Sildenafil Citrate; D013094:Spermatozoa / Q000187:drug effects*; D013450:Sulfones
D010879:Piperazines; D011687:Purines; D013450:Sulfones; D000068677:Sildenafil Citrate