1. Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
2. Nicholas School of the Environment, Duke University, Durham, North Carolina, USA
3. Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
4. Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
5. Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, Michigan, USA
6. Department of Obstetrics and Gynecology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA