1. New Jersey Division of Fish, Game and Wildlife, PO Box 400, Trenton, New Jersey 08625-0400, USA
2. East Stroudsburg University, Department of Biological Sciences, East Stroudsburg, Pennsylvania 18301, USA
3. New Jersey Department of Health, Division of Epidemiology, Trenton, New Jersey 08625, USA
4. Thomas Jefferson University, 1020 Locust Street, Philadelphia, Pennsylvania 19107, USA
5. Centers for Disease Control and Prevention, 1600 Clifton Rd. N.E., Mail Stop G33, Atlanta, Georgia 30333, USA