University of Michigan at Ann Arbor - Department of Environmental Health Sciences, University of Puerto Rico Medical Sciences Campus, University of Georgia - College of Public Health, University of Puerto Rico - Graduate School of Public Health, University of Puerto Rico - Graduate School of Public Health, University of Puerto Rico Medical Sciences Campus, University of Michigan at Ann Arbor - Department of Environmental Health Sciences, University of Puerto Rico Medical Sciences Campus, Northeastern University - College of Engineering, University of Georgia - College of Public Health and University of Michigan at Ann Arbor - Department of Environmental Health Sciences