1. Perinatology Research Branch, NICHD/NIH/DHHS, Detroit, MI, USA;
2. Department of Obstetrics & Gynecology, Wayne State University School of Medicine, Detroit, MI, USA;
3. Department of Obstetrics & Gynecology, University of Michigan, Ann Arbor, MI, USA;
4. Department of Epidemiology & Biostatistics, Michigan State University, East Lansing, MI, USA;
5. Center for Molecular Medicine & Genetics, Wayne State University, Detroit, MI, USA;
6. Department of Immunology, Microbiology & Biochemistry, Wayne State University School of Medicine, Detroit, MI, USA;
7. Department of Obstetrics and Gynecology, Soroka University Medical Center, School of Medicine, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beersheba, Israel;
8. Department of Physiology, Wayne State University School of Medicine, Detroit, MI, USA