1. Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, MD, USA and Detroit, MI, USA
2. Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI, USA
3. Department of Immunology and Microbiology, Wayne State University School of Medicine, Detroit, MI, USA
4. Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, MI, USA
5. Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI, USA
6. Center for Molecular Medicine and Genetics, Wayne State University, Detroit, MI, USA
7. Department of Pathology, Hutzel Women’s Hospital/Harper University Hospital, Wayne State University School of Medicine, Detroit, MI, USA