title: Invited commentary: the challenge of multi-center cohort studies in the search for diet and cancer links.
authors.affiliation: Unit of Nutrition and Cancer, International Agency for Research on Cancer, Lyon, France.
authors.forename: E
authors.initials: E
authors.lastname: Riboli
authors.forename: R
authors.initials: R
authors.lastname: Kaaks
mesh_terms: D015331:Cohort Studies; D004032:Diet; D004034:Diet Surveys; D004812:Epidemiologic Methods; D005006:Ethnicity / Q000706:statistics & numerical data*; D006801:Humans; D015337:Multicenter Studies as Topic; D009369:Neoplasms / Q000208:ethnology*; D011446:Prospective Studies; D014481:United States / Q000453:epidemiology