Deng, Yuan
Xiong, Ying
Ning, Ping
Wang, Xin
Han, Xiao-Rong
Tu, Guo-Fang
He, Pei-Yu
Funding for this research was provided by:
Yuan Deng (the Science and Technology Project of The Health Planning Committee of Sichuan Grant No. 21PJ134)
Article History
Received: 17 January 2022
Accepted: 20 April 2022
First Online: 2 May 2022
Declarations
:
: This study was approved by the Institution Review Board of Chengdu Women and Children’s Central Hospital Ethical approval (Grant No. B2019 (13)). All participants signed an informed consent form before data collection. All procedures performed in this study were in accordance with the ethical standards.
: Not applicable.
: The authors declare that they have no competing interests.