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Mok Q, Butt W.Mok Q, et al. Among authors: butt w.Intensive Care Med. 1996 Mar;22(3):259-63. doi: 10.1007/BF01712247.Intensive Care Med. 1996.PMID: 8727442
Duke TD, Butt W, South M.Duke TD, et al. Among authors: butt w.Intensive Care Med. 1997 Jun;23(6):684-92. doi: 10.1007/s001340050394.Intensive Care Med. 1997.PMID: 9255650