Division of Environmental Health Sciences, School of Public Health, University of California, 2121 Berkeley Way, Room 5302, Berkeley, Berkeley, CA, 94720, USA. anne.bozack@berkeley.edu. Graduate Group in Biostatistics, University of California, Berkeley, Berkeley, CA, USA. Department of Environmental Health and Engineering, The Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA. Advanced Center for Chronic Diseases (ACCDiS), School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile. Department of Public Health, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile. Health Planning Division in the Ministry of Health, Santiago, Chile. Department of Preventive Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA. Department of Environmental Health Science, Mailman School of Public Health, Columbia University, New York City, NY, USA. Division of Environmental Health Sciences, School of Public Health, University of California, 2121 Berkeley Way, Room 5302, Berkeley, Berkeley, CA, 94720, USA.