Liu, Yun
Zheng, Yuanyuan
Wang, Liangtao
Zhong, Xiaoshi
Qin, Danping
Chen, Wenxuan
Tan, Rongshao
Liu, Yan
Funding for this research was provided by:
Science and Technology Planning Project of Guangdong Province (2014B030303002)
Science and Technology Planning Project of Guangdong Province (2017B090904027)
Guangzhou Municipal Health and Family Planning Commission (20181A011020)
Article History
Received: 10 June 2020
Accepted: 9 September 2020
First Online: 15 September 2020
Compliance with Ethical Standards
: This study (including all protocols) was performed in line with the principles of the Declaration of Helsinki. Approval was granted by the Ethics Committee of the Guangzhou Red Cross Hospital, Jinan University Hospital (license code: 2019-235-01).
: The authors declare that they have no conflict of interest.