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Bonten MJ, Gaillard CA, van Tiel FH, van der Geest S, Stobberingh EE.Bonten MJ, et al.Crit Care Med. 1994 Jun;22(6):939-44. doi: 10.1097/00003246-199406000-00010.Crit Care Med. 1994.PMID: 8205826Clinical Trial.