Received: 16 April 2021
Accepted: 17 June 2021
First Online: 10 July 2021
: Approval for the current study protocol (including the lumbar CT scan) was obtained from the ethics committees of Affiliated Hospital of Integrated Traditional Chinese and Western Medicine for Nanjing University of Chinese Medicine (2019LWKY015).We confirm that the subject signed the informed consent and submitted it to the ethics committee for review before the examination, andall methods were carried out in accordance with relevant guidelines and regulations.
: Not Applicable.
: The authors declare that they have no competing interests.