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Li M, Bertout JA, Ratcliffe SJ, Eckenhoff MF, Simon MC, Floyd TF.Li M, et al. Among authors: ratcliffe sj.Anesthesiology. 2010 Oct;113(4):845-58. doi: 10.1097/ALN.0b013e3181eaaef9.Anesthesiology. 2010.PMID: 20808217Free PMC article.