1. School of Veterinary Medicine: Dept. Anatomy, Physiology
and Cell Biology, University of California, Davis, California 95616, United States
2. Dept. of Fisheries and Wildlife, Oregon State University, Corvallis,
Oregon 97331, United States
3. U.S. Geological Survey - Oregon Cooperative Fish and
Wildlife Research Unit, Dept. Fisheries and Wildlife, Oregon State University, Corvallis, Oregon 97331, United
States
4. Real Time Research Inc., 52 SW Roosevelt, Bend, Oregon 97702,
United States
5. Dept. of Civil and Environmental Engineering, University of California, Davis, California 95616,
United States