Erratum to: Singing classes for chronic obstructive pulmonary disease: a randomized controlled trial
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In our 2012 paper on the effect of singing classes for patients with COPD  which compared them to participation in a films studies group, we cited the wrong clinical trial number – (ISRCTN17544114). This number in fact relates to a previous study we had undertaken, published in 2010 which also evaluated singing classes in COPD but had compared them to a “usual care” arm .
The trial number we should have cited is ISRCTN39714922.
- 1.Lord VM, Hume VJ, Kelly JL, Cave P, Silver J, Waldman M, White C, Smith C, Tanner R, Sanchez M, Man WD, Polkey MI, Hopkinson NS: Singing classes for chronic obstructive pulmonary disease: a randomized controlled trial. BMC Pulm Med. 2012, 12 (1): 69-10.1186/1471-2466-12-69.CrossRefPubMedPubMedCentralGoogle Scholar
- The pre-publication history for this paper can be accessed here:http://www.biomedcentral.com/1471-2466/14/181/prepub
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