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62. Declining FEV1 and chronic productive cough in cigarette smokers: a 25-year prospective study of lung cancer incidence in Tecumseh, Michigan. Islam SS; Schottenfeld D Cancer Epidemiol Biomarkers Prev; 1994 Jun; 3(4):289-98. PubMed ID: 8061576 [TBL] [Abstract][Full Text] [Related]
63. [Importance of spasm and way of reactivity to bronchodilatator of patients with chronic obstructive pulmonary disease (author's transl)]. Sprung J Plucne Bolesti Tuberk; 1981; 33(1):8-13. PubMed ID: 7244024 [No Abstract] [Full Text] [Related]
64. [Natural history of chronic respiratory tract obstruction]. Fletcher C; Peto R Bull Int Union Tuberc; 1978 Jun; 53(2):79-87. PubMed ID: 737355 [No Abstract] [Full Text] [Related]