1. Division of Reproductive Endocrinology and Infertility, Department of Gynecology and Obstetrics, Duke Fertility Center, Duke University School of Medicine, Durham, North Carolina
2. Division of Clinical and Epidemiological Research, Department of Gynecology and Obstetrics, Duke University School of Medicine, Durham, North Carolina
3. Reproductive Partners Medical Group, Inc., Beverly Hills, California
4. Division of Reproductive Endocrinology and Infertility, Department of Gynecology and Obstetrics, National Institutes of Health Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, Maryland
5. Reproductive Genetics, Fertility Associates of Memphis, Memphis, Tennessee