Marianne Berwick, PhD, distinguished professor, department of internal medicine, University of New Mexico School of Medicine, and former chief, Division of Epidemiology, Biostatistics and Preventive Medicine, University of New Mexico Comprehensive Cancer Center, both in Albuquerque. She is author or coauthor of more than 200 scientific papers on melanoma published in leading medical journals, including JAMA Dermatology, Journal of the National Cancer Institute and Melanoma Research.