At the heart of the matter: sex.
SoRelle
R
R
D015106:3',5'-Cyclic-GMP Phosphodiesterases / Q000037:antagonists & inhibitors; D003075:Coitus; D007172:Erectile Dysfunction / Q000188:drug therapy* / Q000209:etiology; D005260:Female; D006331:Heart Diseases / Q000150:complications*; D006801:Humans; D008297:Male; D010726:Phosphodiesterase Inhibitors / Q000627:therapeutic use*; D010817:Physician-Patient Relations; D010879:Piperazines / Q000627:therapeutic use*; D011687:Purines; D012735:Sexual Dysfunction, Physiological / Q000209:etiology; D000068677:Sildenafil Citrate; D013450:Sulfones
D010726:Phosphodiesterase Inhibitors; D010879:Piperazines; D011687:Purines; D013450:Sulfones; D000068677:Sildenafil Citrate; D015106:3',5'-Cyclic-GMP Phosphodiesterases