Text and Data Mining valid from 2018-04-03
Received: 15 December 2017
Accepted: 14 March 2018
First Online: 3 April 2018
Ethics approval and consent to participate
: This study was approved by the ethic committee of Sichuan Academy of Medical Sciences & Sichuan Provincial People’s Hospital and conducted in accordance with the Helsinki Declaration. Written informed consent was obtained from all subjects.
: The subjects gave consent for any form of information about themselves to be published in Journal of Orthopaedic Surgery and Research.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.