Dr. Barnhill received his B.S. degree from Tulane University, his B.M.S. from Dartmouth Medical School, M.D. from Duke University School of Medicine and M.Sc. from the University of Oxford. He took his residency training in dermatology at the University of Texas Southwestern Medical School and the University of Oxford, Fellowship training in pathology at the Ochsner Foundation Hospital and in dermatopathology at the University of Miami and the Yale University School of Medicine. He is Professor and Chairman of Dermatology at George Washington University, Washington, D.C. and Visiting Professor in Dermatology and Pathology at Hôpital Saint-Louis, Paris. Dr. Barnhill is an author of more than 150 articles on dermatopathology in peer-reviewed journals and contributor of 29 chapters to text books on dermatology and dermatopathology. His research interests include the clinico-pathological, epidemiological, and molecular genetic studies with respect to precursor lesions and tumor progression in the melanocytic system, angiogenesis in melanoma, and the role of laminin in melanoma cell migration and metastasis.