title: Psychophysical preparation of 1,000 underprivileged primigravid patients for labor.
mesh_terms: D000223:Adaptation, Psychological; D000293:Adolescent; D000328:Adult; D000773:Anesthesia, Obstetrical; D003467:Cultural Deprivation; D005260:Female; D006801:Humans; D009042:Motivation; D009321:Natural Childbirth; D005082:Physical Exertion; D011187:Posture; D011247:Pregnancy; D012119:Respiration