Ding, Ting
Deng, Chun-Mei
Shen, Xiao-Feng
Bai, Yao-Wu
Zhang, Xiao-Lan
Liu, Ji-Ping
Yang, Li-Juan
Yu, Hai-Tao
Xie, Lei
Chen, Hong
Mu, Dong-Liang
Qu, Yuan
Yang, Hui-Xia
Bao, Ai-Rong
Zhu, Sai-Nan
Wang, Dong-Xin
Article History
Received: 23 December 2021
Accepted: 6 April 2022
First Online: 19 April 2022
Declarations
:
: The study was approved by the Ethics Committee of Peking University First Hospital (No.2017[1360], Chairperson Prof. Yin-Mo Yang) on 9 June 2017 and registered with Chinese Clinical Trial Registry (ExternalRef removed; ChiCTR-IOR-17011994) on 14 July 2017. Written informed consents were obtained from all mothers before collecting data. All methods were carried out in accordance with relevant guidelines and regulations.
: Not applicable.
: TD and D-XW report receiving lecture fees and travel expenses for lectures given at domestic academic meetings from Yichang Humanwell Pharmaceutical Co Ltd., China. The other authors reported no conflict of interests.