title: Comments on the updated Harvard Six Cities study.
authors.forename: John F
authors.initials: JF
authors.lastname: Gamble
authors.forename: Mark J
authors.initials: MJ
authors.lastname: Nicolich
mesh_terms: D000397:Air Pollution / Q000009:adverse effects*; D002318:Cardiovascular Diseases / Q000209:etiology / Q000401:mortality*; D005500:Follow-Up Studies; D006801:Humans; D008175:Lung Neoplasms / Q000209:etiology / Q000401:mortality*; D012307:Risk Factors; D015996:Survival Rate / Q000639:trends; D014481:United States / Q000453:epidemiology