1. Department of Environmental Health Sciences, School of Public Health, University at Albany, State University of New York, Albany, New York
2. New York State Department of Health, Albany, New York
3. Health Research Incorporated, Menands, New York
4. Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, Maryland
5. Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina