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Brown SE, Ratcliffe SJ, Halpern SD.Brown SE, et al. Among authors: ratcliffe sj.Crit Care Med. 2014 Aug;42(8):1821-31. doi: 10.1097/CCM.0000000000000334.Crit Care Med. 2014.PMID: 24717464Free PMC article.
Brown SE, Ratcliffe SJ, Kahn JM, Halpern SD.Brown SE, et al. Among authors: ratcliffe sj.Am J Respir Crit Care Med. 2012 May 1;185(9):955-64. doi: 10.1164/rccm.201109-1720OC. Epub 2012 Jan 26.Am J Respir Crit Care Med. 2012.PMID: 22281829Free PMC article.