1. From the School of Veterinary Medicine, University of Wisconsin, Madison, Wisconsin; the Schools of 2Medicine and 3Veterinary Medicine, University of California, Davis, CA;
2. From the School of Veterinary Medicine, University of Wisconsin, Madison, Wisconsin;
3. the School of Veterinary Medicine and
4. the Division of Biological Sciences, University of Missouri, Columbia, Missouri;
5. Covance Laboratories Inc., Madison, Wisconsin;
6. Eye Care for Animals, Tustin, California; and
7. SARcode Corporation, San Francisco, California.