Zhang, Yaozong http://orcid.org/0000-0003-2451-5263
Li, Lan
Yan, Yunsheng
Qi, Haifeng
Qin, Jiali
Ren, Li
Zhang, Ruoxuan
Article History
Received: 21 February 2021
Accepted: 16 September 2021
First Online: 3 October 2021
Declarations
:
: All authors declare no conflict of interest.
: The study protocol was approved by the Institutional Ethics Committee of Chongqing Health Center for Women and Children (approved 23 May 2018).
: All participants provided written consent.