Tonelli MR, Curtis JR, Guntupalli KK, Rubenfeld GD, Arroliga AC, Brochard L, Douglas IS, Gutterman DD, Hall JR, Kavanagh BP, Mancebo J, Misak CJ, Simpson SQ, Slutsky AS, Suffredini AF, Thompson BT, Ware LB, Wheeler AP, Levy MM. An official multi-society statement: the role of clinical research results in the practice of critical care medicine. Am J Respir Crit Care Med. 2012 May 15; 185(10):1117-24.