1. Department of Natural Resources and the Environment University of Connecticut Storrs CT USA
2. Department of Botany and Plant Pathology Oregon State University Corvallis OR USA
3. USDA Forest Service Northern Region Forest Health Protection Missoula MT USA
4. USDA Forest Service Pacific Northwest Research Station Corvallis OR USA
5. USDA Forest Service Rocky Mountain Research Station Moscow ID USA
6. USDA Forest Service Rocky Mountain Region Forest Health Protection Rapid City SD USA
7. Department of Forest Engineering, Resources, and Management Oregon State University Corvallis OR USA