title: Correspondence re Yuan JM et al., Prediagnostic levels of serum beta-cryptoxanthin and retinol predict smoking-related lung cancer risk in Shanghai, China. 2001;10:767-73. Neuhoser ML et al., Fruits and vegetables are associated with lower lung cancer risk only in the placebo arm of the beta-carotene and retinol efficacy trial (CARET). 2002;12:350-8. Satia-Abouta J et al., Associations of micronutrients with colon cancer risk in African Americans and whites: results from the North Carolina Colon Cancer Study. 2003;12:747-54.
authors.forename: Alberto
authors.initials: A
authors.lastname: Ruano-Ravina
authors.forename: Juan Miguel
authors.initials: JM
authors.lastname: Barros-Dios
authors.forename: Adolfo
authors.initials: A
authors.lastname: Figueiras
authors.forename: Pedro
authors.initials: P
authors.lastname: Brañas-Tato
mesh_terms: D003110:Colonic Neoplasms / Q000453:epidemiology / Q000209:etiology; D015986:Confounding Factors, Epidemiologic; D016021:Epidemiologic Studies; D006801:Humans; D008175:Lung Neoplasms / Q000453:epidemiology / Q000209:etiology; D016017:Odds Ratio; D012306:Risk