1. Mohammad Ezzati, MD, Department of Obstetrics & Gynecology, Washington Hospital Center, Washington, DC, USA, Tel.: +1 202 877 8035, Fax: +1 202 877 5435,
2. John M Norian, MD, Reproductive Biology & Medicine Branch, NICHD, NIH, Building 10, CRC, 1 East, Room 1-3140, 10 Center Drive, Bethesda, MD 20892, USA, Tel.: +1 301 496 5800, Fax: +1 301 402 0884,
3. James H Segars, MD, Reproductive Biology & Medicine Branch, NICHD, NIH, Building 10, CRC, 1 East, Room 1-3140, 10 Center Drive, Bethesda, MD 20892, USA, Tel.: +1 301 496 5800, Fax: +1 301 402 0884,