Editorial commentary on Rochiro, et al.
Seftel
Allen D
AD
D006801:Humans; D008297:Male; D010410:Penile Erection / Q000187:drug effects*; D010879:Piperazines / Q000494:pharmacology*; D011687:Purines; D000068677:Sildenafil Citrate; D012890:Sleep; D013450:Sulfones
D010879:Piperazines; D011687:Purines; D013450:Sulfones; D000068677:Sildenafil Citrate