1. University of San Diego, Department of Obstetrics and Gynecology, San Diego, CA, USA
2. Departamento de Ginecologia e Obstetrícia, Universidade Federal do Rio Grande do Sul, Porto Alegre 90035-903, Brazil
3. Obstetrics, Gynecology and Reproductive Biology of Michigan State University, Grand Rapids, MI 49503, USA
4. Obstetrics and Gynecology, Greenville Health System, Greenville, SC 29605, USA
5. Pathology Associates, Greenville Health System, Greenville, SC, USA
6. Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
7. Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, Wake Forest Health, Winston-Salem, NC 27157, USA