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Singing classes for chronic obstructive pulmonary disease: a randomized controlled trial

Victoria M Lord, Victoria J Hume, Julia L Kelly, Phoene Cave, Judith Silver, Maya Waldman, Chris White, Cayley Smith, Rebecca Tanner, Melissa Sanchez, William D-C Man, Michael I Polkey and Nicholas S Hopkinson*

BMC Pulmonary Medicine 2012, 12:69  doi:10.1186/1471-2466-12-69

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