Zhou, Zonglei
Li, Kunpeng
Li, Xianzhi
Luan, Rongsheng
Zhou, Ruzhen
Funding for this research was provided by:
Science and Technology Commission of Shanghai Municipality (20YF1448700)
Health and Family Planning Commission of Baoshan District, Shanghai City (BSZK-2018-A01)
Shanghai Municipal Commission of Health and Family Planning (20184Y0179)
Article History
Received: 29 January 2021
Accepted: 10 June 2021
First Online: 13 June 2021
Declarations
:
: The CHARLS was approved by the Institutional Review Board of Peking University (IRB00001052-11015, IRB00001052-11014). Before participation, written informed consent was obtained from each participant.
: Not applicable.
: The authors declare that they have no competing interests.