1. Perinatology Research Branch, Program for Perinatal Research and Obstetrics, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health; Bethesda, Maryland, and Detroit Michigan USA
2. Detroit Medical Center; Hutzel Women's Hospital; Detroit Michigan USA
3. Department of Obstetrics and Gynecology; Wayne State University School of Medicine; Detroit Michigan USA
4. Department of Obstetrics and Gynecology; Chiang Mai University; Chiang Mai Thailand
5. Department of Obstetrics and Gynecology; University of Michigan; Ann Arbor Michigan USA
6. Department of Epidemiology and Biostatistics; Michigan State University; East Lansing Michigan USA
7. Center for Molecular Medicine and Genetics; Wayne State University; Detroit Michigan USA