1 Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Mass; Channing Division of Network Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Mass. Electronic address: diane.gold@channing.harvard.edu.
2 Division of Chronic Disease Research Across the Lifecourse (CoRAL), Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, Mass.
3 Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Mass; Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, Mass.