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Vincent RD Jr, Werhan CF, Norman PF, Shih GH, Chestnut DH, Ray T, Ross EL, Bofill JA, Shaw DB.Vincent RD Jr, et al. Among authors: chestnut dh.Anesthesiology. 1998 Jun;88(6):1475-9. doi: 10.1097/00000542-199806000-00009.Anesthesiology. 1998.PMID: 9637639Free article.Clinical Trial.