Wang, Jiayi
He, Lingyan
Yan, Wenzhe
Peng, Xiaofei
He, Liyu
Yang, Danyi
Liu, Hong
Peng, Youming
Funding for this research was provided by:
National Natural Science Foundation of China (81870500, 81770714, 81470947)
Natural Science Foundation of Hunan Province (2017JJ2002)
health and family planning commission of hunan province (20180922)
changde municipal science and technology bureau (2016KZ34)
Article History
Received: 10 September 2019
Accepted: 19 December 2019
First Online: 18 January 2020
Compliance with ethical standards
:
: The authors have no conflicts of interest to declare.
: The studies have been approved by the appropriate institutional research ethics committee and have been performed in accordance with the ethical standards as laid down in the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards.