Huang, Zhangheng
Tong, Yuexin
Fan, Zhiyi
Hu, Chuan
Zhao, Chengliang http://orcid.org/0000-0002-2673-3398
Article History
Received: 28 April 2020
Accepted: 6 September 2020
First Online: 5 January 2021
Change Date: 30 December 2020
Change Type: Correction
Change Details: This article has been retracted. Please see the Retraction Notice for more detail: https://doi.org/10.1186/s13018-020-02167-7.
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board of the affiliated Hospital of Chengde Medical University. Written informed consent was obtained from all patients. No children (under16 years old) were included in this study.
: Not applicable.
: The authors declare that they have no competing interests.