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Shortness of breath with daily activities questionnaire: Validation and responder thresholds in patients with chronic obstructive pulmonary disease

Authors:
Watkins, M. L.; Wilcox, T. K.; Tabberer, M.; Brooks, J. M.; Donohue, J. F.; Anzueto, A.; Chen, W. H.; Crim, C.
Journal:
BMJ Open
Year:
2013
DOI