aCritical Care Medicine, University of Wisconsin School of Medicine and Public Health, Madison, USA bUniversity of Wisconsin School of Medicine and Public Health, Madison, USA Correspondence to Douglas B. Coursin, MD, Professor of Anesthesiology and Medicine, B6/319 UW CSC, 600 Highland Ave, Madison, WI 53792-3272, USA Tel: +1 608 263 9131/263 8100; fax: +1 608 262 6247; e-mail: [email protected]
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Wood et al. (2007) studied this question.
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