Article History
Received: 14 February 2023
Accepted: 9 February 2024
First Online: 15 March 2024
Declarations
:
: As the retrospective nature of our study, we contacted patients by telephone to obtain informed consent from them and made telephone recordings. Approval was obtained from the Ethical Committee of first Hospital of Shanxi Medical University (Ethics No. KYLL-2023-011). The procedures used in this study adhere to the tenets of the Declaration of Helsinki. All methods were performed in accordance with the relevant guidelines and regulations. All participants gave informed consent.
: The authors declare that they have no conflict of interest.
: Not applicable.