Li, Yali
Huang, Lei
Article History
Received: 30 July 2021
Accepted: 7 February 2022
First Online: 23 February 2022
Declarations
:
: The China Family Panel Studies were approved by the Ethical Committee of Peking University; informed consent was obtained from all individual participants, and the data were collected following the ethical standards as laid down in the 1964 Declaration of Helsinki.
: “Not applicable”.
: The authors declare that they have no competing interests.