Sexual behavior in Japanese students: comparisons for 1974, 1960, and 1952.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D003075:Coitus; D004542:Ejaculation; D005260:Female; D006716:Homosexuality; D006801:Humans; D007564:Japan; D007989:Libido; D008297:Male; D008418:Masturbation; D008598:Menstruation; D011606:Psychosexual Development; D012725:Sexual Behavior; D012922:Social Change