作者单位：Department of Orthopaedic Surgery, ENDO-Klinik, Hamburg, Germany[1]Department of Orthopaedic Research, Rothman Institute, Thomas Jefferson University, Philadelphia[2]Department of Orthopaedic Surgery, Rothman Institute, Thomas Jefferson University, 125 S 9th Street[3]School of Business Administration, University of Vermont, Burlington, VT, United States[4]
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