1. Department
of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, Michigan 48109-2029, United States
2. Department
of Obstetrics and Gynecology, Brigham and Women’s Hospital, Boston, Massachusetts 02115, United States
3. Department
of Biostatistics, University of Michigan School of Public Health, Ann Arbor, Michigan 48109-2029, United States
4. University of Puerto Rico Graduate School of Public Health, UPR Medical Sciences Campus, San
Juan, 00936-5067, Puerto
Rico
5. University of Puerto Rico School of Medicine, UPR Medical
Sciences Campus, San Juan, 00936-5067, Puerto Rico
6. Division
of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, United States
7. College
of Engineering, Northeastern University, Boston, Massachusetts 02115, United States