Emily White has conducted research at the Fred Hutchinson Cancer Research Center for almost 25 years, and has published widely on nutrient intake and other lifestyle factors in relation to breast, colorectal, lung, prostate, bladder and skin cancer, as well as on the methodology of exposure measurement. She received her Master's degree in Biostatistics and her PhD in Epidemiology from the University of Washington. Bruce Armstrong is known internationally as an authority on the causes and prevention of skin cancer and melanoma, and has made important contributions to knowledge on the causes and control of other cancers, high blood pressure and heart disease. His present research interests are the genetic and environmental epidemiology of cancer, and the quality and performance of cancer services. Bruce was appointed a Member of the Order of Australia on Australia Day 1998 for services to medicine through research in cancer epidemiology, elected a Fellow of the Australian Academy of Science in 2000, honoured in 2005 at the 6th World Congress on Melanoma in Vancouver with an award for a lifetime of achievement in basic research into melanoma, and given the inaugural New South Wales Premier's award for Outstanding Cancer Researcher of the Year 2006. Bruce did a PhD with Sir Richard Doll at Oxford University. He is former Deputy Director of IARC and Director General of Health in Western Australia Rodolfo Saracci worked for thirty years (1976-2006) as Chief of Analytical Epidemiology and later as consultant at the WHO International Agency for Research on Cancer, Lyon. He is currently Adjunct Professor, University of Aarhus (Denmark), and has been director since 1988 of the summer didactic programme "European Educational Programme in Epidemiology" (Florence,Italy). He has authored some two hundred publications in Medline, most on cancer as related to environment and nutrition, and on empirical research on ethical issues in medicine & epidemiology. His qualifications/awards include Former President (1996-99) International Epidemiological Association; Founder and Emeritus Member, Italian Association of Epidemiology (AIE, Associazione Italiana Epidemiologia); currently Associate Editor, International Epidemiological Association; and Former Member of editorial boards 'American Journal of Epidemiology' and 'Epidemiology'.