1. Department of Veterinary Population Medicine College of Veterinary Medicine University of Minnesota 1365 Gortner Avenue St. Paul Minnesota 55108USA
2. Department of Fisheries, Wildlife, and Conservation Biology University of Minnesota 2003 Upper Buford Circle St. Paul Minnesota 55108USA
3. Grupo de Ecología y Diversidad Biológica Facultad de Recursos Naturales y Medicina Veterinaria Universidad Santo Tomás, Sede Temuco Manuel Rodríguez 060 Temuco Chile
4. Escuela de Medicina Veterinaria Facultad de Ciencias Universidad Mayor Chile
5. Minnesota Department of Natural Resources 500 Lafayette Road St. Paul Minnesota 55155USA
6. Department of Fish and Wildlife Conservation Virginia Tech Blacksburg Virginia 24061 USA