1. Department of Soil, Water, and Environmental Sciences, Yuma Agricultural Center, The University of Arizona, Yuma, Arizona, 85364, Environ Health Sciences Institute, Ruston, Louisiana 71270, Personal Chemical Exposure Program, Department of Entomology, University of California, Riverside, Riverside, California 92521, and Health Management Division, Kerr-McGee Shared Services LLC, Oklahoma City, Oklahoma 73125