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Schmidt UH, Kumwilaisak K, Bittner E, George E, Hess D.Schmidt UH, et al.Anesthesiology. 2008 Dec;109(6):973-7. doi: 10.1097/ALN.0b013e31818ddb90.Anesthesiology. 2008.PMID: 19034093Free article.
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Eikermann M, Garzon-Serrano J, Kwo J, Grosse-Sundrup M, Schmidt U, Bigatello L.Eikermann M, et al. Among authors: schmidt u.Open Respir Med J. 2010 Jun 25;4:58-62. doi: 10.2174/1874306401004010058.Open Respir Med J. 2010.PMID: 20802806Free PMC article.