1. Lap of Love Veterinary Hospice, 1780 N US Highway 41, Lutz, FL 33549, USA
2. AMEDDC&S Department of Veterinary Science, 3630 Stanley Rd, Bldg 2618, Fort Sam Houston, TX 78234, USA
3. Emeritus Professor, University of California, 1536 Notre Dame Drive, Davis, CA 95616, USA
4. Veterinary Anesthesia Specialists, PO Box 418, Clackamas, OR 97015, USA
5. University of Florida Veterinary Hospital, College of Veterinary Medicine, 2015 SW 16th Avenue, Gainesville, FL 32610, USA
6. Colorado State University Veterinary Teaching Hospital, 300 W Drake Rd, Fort Collins, CO 80523, USA