Emotional quality and physical quantity of sexual activity in aging males.
D000367:Age Factors; D000368:Aged; D003075:Coitus; D003376:Counseling; D007172:Erectile Dysfunction / Q000209:etiology; D006801:Humans; D008297:Male; D008418:Masturbation; D008875:Middle Aged; D009042:Motivation; D009948:Orgasm; D012737:Sex Factors; D012725:Sexual Behavior