Changed patterns of obstetric care: maternity continuity clinic.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D003191:Comprehensive Health Care; D005260:Female; D006801:Humans; D009722:Nurse Practitioners; D009773:Obstetric Nursing; D009774:Obstetrics; D009820:Ohio; D010044:Outpatient Clinics, Hospital; D011247:Pregnancy; D011295:Prenatal Care