1. Wildlife Health Center, School of Veterinary Medicine, University of California, Davis, California.
2. The Nature Conservancy, San Francisco, California.
3. Migratory Bird Center, Smithsonian Conservation Biology Institute, Washington, District of Columbia.
4. Department of Biology, Colorado State University, Fort Collins, Colorado.
5. Center for Vectorborne Diseases, School of Veterinary Medicine, University of California, Davis, California.
6. Orange County Vector Control District, Garden Grove, California.