1 a 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, MD and Detroit, MI , USA.
2 b Department of Obstetrics and Gynecology , Wayne State University , Detroit , MI , USA.
3 c Department of Obstetrics and Gynecology , University of Michigan , Ann Arbor , MI , USA.
4 d Department of Epidemiology and Biostatistics , Michigan State University , East Lansing , MI , USA.
5 e Center for Molecular Medicine and Genetics, Wayne State University , Detroit , MI , USA.
6 f Program in Reproductive and Adult Endocrinology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health , Bethesda , MD , USA.
7 g Perinatal Unit, Winchester Obstetrics and Gynecology, Winchester Medical Center , Winchester , VA , USA , and.
8 h Department of Pathology , University of Ulsan College of Medicine, Asan Medical Center , Seoul , Republic of Korea.