1. Foreign Animal Disease Diagnostic Laboratory, National Veterinary Services Laboratory, Science and Technology, Animal and Plant Health Inspection Service, United States Department of Agriculture, P.O. Box 848, Greenport, New York 11944, USA
2. Veterinary Services, Animal and Plant Health Inspection Service, United States Department of Agriculture, 2333 Whitehorse-Mercerville Road, Trenton, New Jersey 08625, USA