1 Center for Neurobiology and Behavior, Psychiatry Department, School of Medicine, University of Pennsylvania, Philadelphia, PA 19104.
| 2 Cat Care Clinic, 601 N Whitney Way, Madison, WI 53705.
| 3 Department of Small Animal Medicine and Surgery, College of Veterinary Medicine and Biomedical Science, Texas A&M University, College Station, TX 77843.
| 4 Four Rivers Veterinary Clinic, 2280 SW 4th Ave, Ontario, Ore 97914, West Vet Emergency and Referral Center, 5019 N Sawyer, Garden City, ID 83714.
| 5 Department of Anatomy and Radiology, College of Veterinary Medicine, University of Georgia, Athens, GA 30602.