Letter: Premenstrual tension.
D000293:Adolescent; D000328:Adult; D000818:Animals; D003075:Coitus; D005260:Female; D000882:Haplorhini; D006801:Humans; D008297:Male; D008875:Middle Aged; D011293:Premenstrual Syndrome; D012725:Sexual Behavior; D012726:Sexual Behavior, Animal; D013997:Time Factors