1. U.S. Department of Agriculture, Animal and Plant Health Inspection Service; Wildlife Services; 3430 Constitution Drive, Suite 121 Springfield IL 62711 USA
2. University of Illinois at Urbana-Champaign; 205 N Mathews Avenue Urbana IL 61801 USA
3. U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services; National Wildlife Research Center; 6100 Columbus Avenue Sandusky OH 44870 USA
4. U.S. Department of Agriculture, Animal and Plant Health Inspection Service; Wildlife Services; O'Hare International Airport; AMC Building, Room 421 Chicago IL 60666 USA