Sun, Huaiqiang
Qu, Haibo
Chen, Lu
Wang, Wei
Liao, Yi
Zou, Ling
Zhou, Ziyi
Wang, Xiaodong
Zhou, Shu http://orcid.org/0000-0001-7601-970X
Funding for this research was provided by:
National Natural Science Foundation of China (81601458)
Ministry of Science and Technology of the People's Republic of China (2016YFC0100803, 2018YFC1004603)
Health and Family Planning Commission of Sichuan Province (16ZD017)
Bureau of Science and Technology of Chengdu City (2014-HM01-00314-SF)
Article History
Received: 15 February 2019
Revised: 30 June 2019
Accepted: 15 July 2019
First Online: 23 August 2019
Compliance with ethical standards
:
: The scientific guarantor of this publication is S. Zhou.
: The authors declare that they have no conflict of interest.
: One of the authors (H. Sun) has significant statistical expertise.
: Written informed consent was waived by the Institutional Review Board.
: Institutional Review Board approval was obtained.
: • retrospective• cross-sectional study• performed at one institution