Etiology and management of sexual dysfunction in elderly men.
D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000523:psychology*; D001521:Behavior Therapy; D007172:Erectile Dysfunction / Q000209:etiology* / Q000523:psychology; D006801:Humans; D008297:Male; D008875:Middle Aged; D013739:Testosterone / Q000502:physiology
D013739:Testosterone