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HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS Full Text of this Article Reprint (PDF) Version of this Article Similar articles found in: AJRCCM Online PubMed PubMed Citation Search Medline for articles by: SCHWARTZ, J. || PEKKANEN, J. Alert me when: new articles cite this article Download to Citation Manager Collections under which this article appears: Risk Factors: Tobacco ...