DOI:
10.1055/s-00035037
Methods of Information in Medicine
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References
Donaldson GC, Wilkinson TMA, Hurst JR, Perera WR, Wedzicha JA.
Exacerbations and Time Spent Outdoors in Chronic Obstructive Pulmonary Disease.
American Journal of Respiratory and Critical Care Medicine 2005;
171: 446-452.
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