1. Wildlife Epidemiology Lab, Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois Urbana-Champaign, 2001 S Lincoln Avenue, Urbana, Illinois 61802, USA;
2. Department of Biological Sciences, Northern Illinois University, 155 Castle Drive, DeKalb, Illinois 60115, USA;
3. Biology Department, Grand Valley State University, 1 Campus Drive, Allendale, Michigan 49401, USA;
4. Department of Biology, Indiana-Purdue University, 2101 E Coliseum Boulevard, Fort Wayne, Fort Wayne, Indiana 46805, USA;