1. Department of Pathology, The Animal Medical Center, and Laboratory of Comparative Pathology of Rockefeller University, Weill Cornell Medical College, and Memorial Sloan-Kettering Cancer Center, New York, New York
2. Department of Medicine, The Animal Medical Center, New York, New York
3. Flaherty Comparative Oncology Laboratory, The Animal Medical Center, New York, New York
4. Department of Comparative Medicine, Stanford University School of Medicine, Palo Alto, California