Gao, Jiaxiang
Qiu, Yudian
Hou, Yunfei
Zhang, Liyi
Wang, Kai
Chen, Zhaoyu
Liu, Qian
Lin, Jianhao
Funding for this research was provided by:
national major science and technology projects of china (D171100003217002, Z171100002717094)
national natural science foundation of china (81973606, 81501919)
Article History
Received: 17 May 2021
Accepted: 13 July 2021
First Online: 27 July 2021
Declarations
:
: The authors declare that they have no conflict of interests.
: CHARLS study is an open dataset. The CHARLS was approved by the Ethics Review Committee of Peking University (IRB 00001052-11015).
: CHARLS study is an open dataset. All procedures performed in CHARLS study involving human participants were in accordance with the ethical standards of the Ethics Review Committee of Peking University (IRB 00001052–11015) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: All participants signed an informed consent.
: Not applicable.