Ma, Xingli
Fan, Wenyu
Zhang, Xindan
Zhang, Shilong
Feng, Xia
Song, Suhang
Wang, Haipeng
Funding for this research was provided by:
National Key Research and Development Program of China (2020YFC2006505, 2020YFC2006505, 2020YFC2006505, 2020YFC2006505, 2020YFC2006505, 2020YFC2006505, 2020YFC2006505)
Article History
Received: 14 July 2023
Accepted: 9 November 2023
First Online: 20 November 2023
Declarations
:
: All methods were carried out in accordance with relevant guidelines and regulations or the Declaration of Helsinki. The survey was approved by the Biomedical Ethics Review Committee of Peking University, and all data are available online at the CHARLS project website (ExternalRef removed). The ethical approval number was IRB00001052–11015. All participants signed a written informed consent form.
: Not applicable.
: The authors declare that they have no competing interests.