title: Normal psychology of the aging process, revisited--I: sex and old age: a further review of the literature.
mesh_terms: D000223:Adaptation, Psychological; D000368:Aged; D000375:Aging; D005260:Female; D006801:Humans; D007989:Libido; D008297:Male; D008875:Middle Aged; D012649:Self Concept; D012725:Sexual Behavior; D012735:Sexual Dysfunction, Physiological / Q000175:diagnosis