Incidence of colorectal cancer and influence of dietary habits in fifteen European countries from 1971 to 2002 Luis M. Béjar, Miguel Gili, Beatriz Infantes, Pamela F. Marcott

Alcohol consumption and lung cancer risk in never smokers José Antonio García-Lavandeira, Alberto Ruano-Ravina, Juan Miguel Barros-Dios

Prevalence and correlates of skin cancer risk behaviors in Madrid (Spain) Iñaki Galán, Ángel Rodríguez-Laso, Lucía Díez-Gañán, Enrique Cámara