1. Pacific Southwest Research Station, USDA Forest Service, 1731 Research Park Drive, Davis, CA 95618, USA
2. Forest Health Protection, USDA Forest Service, 4746 South 1900 East, Ogden, UT 84403, USA
3. Pacific Southwest Research Station, USDA Forest Service, 2480 Carson Road, Placerville, CA 95667, USA
4. ISCA Incorporation, 1230 Spring Street, Riverside, CA 92507, USA