Li, Zeyu
Jia, Yufei
Parshley, Iris
Zhang, Yaoguang
Wang, Jia
Long, Qian
Article History
Received: 31 August 2022
Accepted: 10 July 2023
First Online: 11 August 2023
Declarations
:
: This study was based on a secondary data analysis. The research team obtained approval from the Center for Health Statistics and Information of the National Health Commission (NHC) of China (formerly the Ministry of Health) to access the birth dataset in 2013 and 2018.
: Not applicable.
: The authors declare no competing interests.