Obstetric liaison.
D004739:England; D005260:Female; D015658:HIV Infections / Q000517:prevention & control*; D006801:Humans; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000517:prevention & control*; D012017:Referral and Consultation; D012307:Risk Factors; D015819:Substance Abuse, Intravenous / Q000534:rehabilitation*