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Wijeysundera et al1 should be commended for their thought-provoking article suggesting that preoperative medical consultation is associated with worse outcomes. They performed a detailed analysis of administrative data, attempted to minimize bias with appropriate statistical techniques, and found a positive association between preoperative consultation and mortality.
Lee TC. Is There Value in a Preoperative Medical Consultation?. Arch Intern Med. 2011;171(4):365-369. doi:10.1001/archinternmed.2011.7