1. Department
of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, Michigan,
United States
2. Department
of Biostatistics, University of Michigan School of Public Health, Ann Arbor, Michigan, United
States
3. Centers for Disease and Control and Prevention, Atlanta, Georgia, United
States
4. University of Puerto Rico Graduate School of Public Health, UPR Medical Sciences
Campus, San Juan, Puerto Rico
5. College of Engineering, Northeastern University, Boston, Massachusetts, United
States