1. Perinatal Research Laboratories, Department of Obstetrics and Gynecology, David-Geffen School of Medicine at University of California Los Angeles (UCLA), and Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, California,
2. Perinatal Research Laboratories, Department of Obstetrics and Gynecology, David-Geffen School of Medicine at University of California Los Angeles (UCLA), and Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, California