1. School of Public Health, University of Nevada Las Vegas, 4700 S. Maryland Parkway, Las Vegas, Nevada 89119, United States
2. Southern Nevada Water Authority, P.O. Box 99954, Las Vegas, Nevada 89193, United States
3. Yuma Center of Excellence for Desert Agriculture (YCEDA), University of Arizona, 6425 W. 8th Street, Yuma, Arizona 85364, United States
4. Utah Department of Health and Human Services, Utah Public Health Laboratory, 4431 South 2700 West, Taylorsville, Utah 84129, United States