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Nielsen VG, Tan S, Baird MS, Samuelson PN, McCammon AT, Parks DA.Nielsen VG, et al. Among authors: samuelson pn.Crit Care Med. 1997 Jun;25(6):1044-50. doi: 10.1097/00003246-199706000-00023.Crit Care Med. 1997.PMID: 9201059