title: A four year comparison of premarital sexual attitudes.
mesh_terms: D001290:Attitude; D003075:Coitus; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007398:Interpersonal Relations; D008297:Male; D008393:Marriage; D009948:Orgasm; D012725:Sexual Behavior; D013334:Students; D011795:Surveys and Questionnaires; D013997:Time Factors