1. US Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services, National Wildlife Research Center, 4101 LaPorte Avenue, Fort Collins, Colorado 80521, USA
2. US Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services, Room 200 Thompson Hall, 775 Stone Boulevard, Mississippi State, Mississippi 39762, USA
3. US Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services, 3419A Arden Way, Sacramento, California 95825, USA
4. US Department of Agriculture, Animal and Plant Health Inspection Service, 1780 Commercial Drive, Port Allen, Louisiana 70767, USA
5. US Department of Agriculture, Animal and Plant Health Inspection Service, Veterinary Services, Federal Building, Room 891, 210 Walnut Street, Des Moines, Iowa 50309, USA