title: Epidemiology--future directions.
authors.affiliation: Harvard Medical School, Harvard School of Public Health, Boston, MA, USA.
authors.forename: G A
authors.initials: GA
authors.lastname: Colditz
mesh_terms: D002908:Chronic Disease / Q000453:epidemiology*; D004032:Diet; D004812:Epidemiologic Methods; D004813:Epidemiology / Q000639:trends*; D006801:Humans; D008175:Lung Neoplasms / Q000209:etiology; D011634:Public Health; D012106:Research; D012907:Smoking / Q000009:adverse effects