1. Bioanalytical Center, Washington State University, Pullman, Washington 99164
2. Science and Education Administration, Federal Research, Western Region Pioneering Research Laboratory, Pullman, Washington 99164
3. Veterinary Microbiology and Pathology, Washington State University, Pullman, Washington 99164
4. (Deceased) Former Professor of Plant Pathology, Washington State University, Pullman, Washington 99164