Li, Shuxian http://orcid.org/0000-0003-2601-6126
Li, Anna
Zhai, Liping
Sun, Yaqiong
Yu, Ling
Fang, Zhenya
Zhang, Lin
Peng, Yanjie
Zhang, Meihua
Wang, Xietong
Article History
Received: 26 September 2021
Accepted: 4 January 2022
First Online: 11 January 2022
Declarations
:
: The research protocol was approved by the Ethics Committee of Maternal and Child Healthcare Hospital of Shandong Province (NSFC: NO.2021–036).
: The authors declare no competing financial interests.