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Riley ET, Cohen SE, Macario A, Desai JB, Ratner EF.Riley ET, et al. Among authors: macario a.Anesth Analg. 1995 Apr;80(4):709-12. doi: 10.1097/00000539-199504000-00010.Anesth Analg. 1995.PMID: 7893022Clinical Trial.
Macario A, Vitez TS, Dunn B, McDonald T.Macario A, et al.Anesthesiology. 1995 Dec;83(6):1138-44. doi: 10.1097/00000542-199512000-00002.Anesthesiology. 1995.PMID: 8533904Free article.