1 Department of Environmental Health Sciences, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA.
2 Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA.
3 Montana Technological University, Butte, MT, USA.
4 Department of Environmental, Occupational, and Geospatial Health Sciences, CUNY Graduate School of Public Health & Health Policy, New York, NY, USA. suzanne.mcdermott@sph.cuny.edu.