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Q: How should one investigate a chronic cough?
Tofts RP, Ferrer G, Oliveira E. Tofts RP, et al. Cleve Clin J Med. 2011 Feb;78(2):84-5, 89. doi: 10.3949/ccjm.77a.10033. Cleve Clin J Med. 2011. PMID: 21285339 Free article. No abstract available.