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34. [The methodological aspects of identifying the etiological significance of anthropogenic pollution in the genesis of chronic bronchitis]. Semenova RI, Bogdanov NA, Maskeev KM. Ter Arkh; 1993 Jun; 65(12):54-8. PubMed ID: 8146773 [Abstract] [Full Text] [Related]
39. Prevention of chronic obstructive pulmonary disease: a challenge for the health professions. O'Hagan J. N Z Med J; 1996 Jan 26; 109(1014):1-2. PubMed ID: 8628524 [No Abstract] [Full Text] [Related]