1. Department of Melanoma Medical Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas.
2. Department of Endocrine Neoplasia and Hormonal Disorders, The University of Texas M.D. Anderson Cancer Center, Houston, Texas.
3. Department of Pathology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas.
4. Plexxikon Inc., Berkeley, California.
5. Roche Pharmaceuticals, Nutley, New Jersey.