Moving From Observational Studies to
Clinical Trials
:
Why Do We Sometimes Get
It Wrong?
Mar
í
a Elena Mart
í
nez, M.P.H., Ph.D.
Associate Professor of Epidemiology & Nutrition
Co-Director, Cancer Prevention and Control
Arizona Cancer Center
University of Arizona, Tucson, AZ
National Institutes of Health
Bethesda, MD
January 11-12, 2005