作者单位：Department of Anaesthesia, Centre of Head and Orthopedics, Copenhagen University Hospital[1]Department of Anaesthesiology, Glostrup Hospital, University of Copenhagen, Nordre Ringvej 57, 2600[2]Department of Orthopedics, Glostrup Hospital, University of Copenhagen, Hvidovre, Denmark[3]Section of Acute Pain Management, Copenhagen University Hospital, Rigshospitalet, Copenhagen[4]
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