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Riha RL, Brander P, Vennelle M, McArdle N, Kerr SM, Anderson NH, Douglas NJ.Riha RL, et al.Eur Respir J. 2005 Oct;26(4):673-8. doi: 10.1183/09031936.05.00130804.Eur Respir J. 2005.PMID: 16204600Free article.
Vennelle M, White S, Riha RL, Mackay TW, Engleman HM, Douglas NJ.Vennelle M, et al. Among authors: riha rl.Sleep. 2010 Feb;33(2):267-71. doi: 10.1093/sleep/33.2.267.Sleep. 2010.PMID: 20175411Free PMC article.Clinical Trial.