title: Apparent heterosexuality in two male patients requesting change-of-sex operation.
mesh_terms: D000328:Adult; D012734:Disorders of Sex Development; D004882:Erotica; D006801:Humans; D008297:Male; D008875:Middle Aged; D009040:Motion Pictures; D009949:Orientation; D010413:Penis / Q000502:physiology; D012725:Sexual Behavior; D014189:Transsexualism