1. Service Pr Olive Department of Pharmacology Hôpital Saint-Vincent de Paul 74-82 Avenue Denfert Rochereau 75674 Paris Cedex 14, France FAX 331/4335-4670
2. Midwife's School Clinique Universitaire Baudelocque Paris 75014, France
3. Intensive Care Unit Hôpital Saint-Vincent de Paul
4. Department of Maternity Hôpital Saint-Vincent de Paul
5. Department of Neonatology Hôpital Saint-Vincent de Paul