Tu, Wen-Jun
Chao, Bao-Hua
Yan, Feng
Cao, Lei
Wang, Long-De
Funding for this research was provided by:
National Health and Family Planning Commission of China
Natural Science Foundation of Tianjin City (19JCYBJC26600)
Postdoctoral Research Foundation of China (2019M660921)
Article History
Accepted: 8 April 2020
First Online: 27 April 2020
Compliance with ethical standards
:
: None.
: The ethics committee of Xuanwu Hospital Capital Medical University approved the study protocol according to the Declaration of Helsinki (No. 2015-24). Written informed consent was obtained from patients before enrolment.