Lian, Qiang
Li, Kangxian
Yang, Qinfeng
Lian, Yun
Zhao, Mingchen
Shi, Zhanjun
Wang, Jian
Zhang, Yang
Article History
Received: 21 December 2021
Accepted: 13 April 2022
First Online: 25 April 2022
Change Date: 19 May 2022
Change Type: Correction
Change Details: A Correction to this paper has been published:
Change Details: https://doi.org/10.1186/s12891-022-05425-3
Declarations
:
: Not applicable. Administrative permissions were required to access the raw data used in this study and the corresponding author’s (Zhang yang) work unit (Division of Orthopaedic Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, 510515, China.) has already granted permission from Agency for Healthcare Research and Quality (AHRQ) to access Healthcare Cost and Utilization Project (HCUP) Nationwide Databases. However, this observational study used deidentified publicly available data, hence there was no requirement for consent to participate and it was deemed exempt by the ethics committee. So there is no need to grant permission in the Ethics approval and consent to participate section. What is more, the data used in this study were no need anonymized before its use. All methods are carried out following relevant guidelines and regulations. the data used in this study were not need anonymized before its use.
: Not applicable.
: The authors declare that they have no competing interests in funding.