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Bull TM, Clark B, McFann K, Moss M; National Institutes of Health/National Heart, Lung, and Blood Institute ARDS Network.Bull TM, et al.Am J Respir Crit Care Med. 2010 Nov 1;182(9):1123-8. doi: 10.1164/rccm.201002-0250OC. Epub 2010 Jun 17.Am J Respir Crit Care Med. 2010.PMID: 20558628Free PMC article.Clinical Trial.