1. ESMAN Medical Consulting, Via Carlo Crivelli, 20 20122 Milano, Italy, Tel.: +39 025 843 0703; Fax: +39 025 830 4466;
2. Tel.: +39 024 549 1134; Fax: +39 024 549 1135;
3. Tel.: +39 025 843 0703; Fax: +39 02 5830 4466;
4. Chelsea & Westminster Hospital, Assisted Conception Unit, London SW10 9NH, UK, Tel.: +44 172 8746 8000; Fax: +44 172 8746 8921;