Wang, Haiwei
Wang, Xinrui
Xu, Liangpu
Cao, Hua
Funding for this research was provided by:
Fujian Maternity and Child Health Hospital (No.YCXB 18-10 and YCXM 19-04)
Article History
Received: 31 October 2019
Accepted: 13 May 2020
First Online: 27 May 2020
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.