Fan, Dazhi
Zeng, Meng
Xia, Qing
Wu, Shuzhen
Ye, Shaoxin
Rao, Jiaming
Lin, Dongxin
Zhang, Huishan
Ma, Huiting
Han, Zhongchao
Guo, Xiaoling
Liu, Zhengping http://orcid.org/0000-0002-4964-0258
Funding for this research was provided by:
the Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan (FSFY20160501)
Article History
Received: 1 November 2019
Revised: 27 March 2020
Accepted: 28 April 2020
First Online: 25 June 2020
Ethics approval and consent to participate
: The trial was approved by the Ethics Committee of the Affiliated Foshan Maternity & Child Healthcare Hospital, Southern Medical University (no. 2016-0501).
: Not applicable
: The authors declare that they have no competing interests.