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Authors
Liu, Shencai
Qiang, Li
Yang, Qinfeng
Fan, Lei
Wang, Jian
Yang, Yusheng
Shi, Zhanjun
Li, Tao
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Funding
Funding for this research was provided by:
Special Foundation of President of the Nanfang Hospital (2019B016)
Science and Technology Program of Guangzhou (202201011345)
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Article History
Received: 2 August 2022
Accepted: 4 April 2023
First Online: 13 April 2023
Declarations
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: Not applicable. Administrative permissions were required to access the raw data used in this study and the corresponding author’s (Tao Li) 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 deidentifed 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 no competing interests.
