1. Department of Environmental Health Sciences, University of Alabama at Birmingham, Birmingham 35294, Alabama, United States
2. Department of Biomedical Informatics and Center for Biostatistics, The Ohio State University, Columbus 43210, Ohio, United States
3. Department of Epidemiology, Brown University, Providence 02912, Rhode Island, United States
4. Department of Pediatrics, University of Louisville, Louisville 40292, Kentucky, United States
5. Department of Geography & Geosciences, University of Louisville, Louisville 40292, Kentucky, United States