1. Department of OBGYN, Division of Reproductive Endocrinology and Infertility SUNY Downstate Health Sciences University Brooklyn New York USA
2. Department of OBGYN, Division of Reproductive Endocrinology and Infertility Maimonides Medical Center Brooklyn New York USA
3. Rejuvenating Fertility Center New York USA
4. HOCATT SA Cape Town South Africa
5. Causenta Cancer Treatment Center in Scottsdale Arizona USA
6. HOCATT USA Weatherford Texas USA