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  1. Correspondence to Professor Yipeng Wang, Department of Orthopaedic Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing 100730, China; ypwang_pumch{at}
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Liu S, Zhou X, Song A, et al

Publication history

  • Received April 29, 2019
  • Revised July 10, 2019
  • Accepted July 21, 2019
  • First published August 1, 2019.
Online issue publication 
November 21, 2019

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