1. David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California;
2. Division of Neonatology and Developmental Biology, Department of Pediatrics, University of California at Los Angeles, Los Angeles, California;
3. Department of Public Health and Community Medicine, Tufts University School of Medicine, Boston, Massachusetts;
4. Department of Gynecology and Obstetrics, Hannover Medical School, Hannover, Germany;
5. Department of Neuromedicine and Movement Science, Norwegian University of Science and Technology, Trondheim, Norway;
6. Division of Maternal and Fetal Medicine, Department of Obstetrics and Gynecology, University of California at Los Angeles, Los Angeles, California; and
7. Division of Retina and Vitreous Diseases, Stein and Doheny Eye Institutes, University of California at Los Angeles, Los Angeles, California.