1. Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI, USA
2. Department of Pathology, Wayne State University School of Medicine, Detroit, MI, USA
3. Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda and Detroit, MI, USA
4. CEDIP, Department of Obstetrics and Gynecology, Sotero del Rio Hospital, Puente Alto, Chile
5. Department of Obstetrics and Gynecology, Soroka Medical Center, Ben Gurion University of the Negev, Beer Sheva, Israel