Wu, Lei
Zhang, Xi-nuo
Wang, Yun-sheng
Liu, Yu-zeng
Hai, Yong
Funding for this research was provided by:
National Natural Science Foundation of China (81772421)
Article History
Received: 29 April 2019
Accepted: 5 July 2019
First Online: 16 July 2019
Ethics approval and consent to participate
: The study was approved by Ethics Committee of Chaoyang Hospital. This study was in accordance with the ethical standards of the institutional research committee, the 1964 Helsinki declaration, and its later amendments. For this type of study formal consent is not required.
: Not applicable.
: The authors declare that they have no competing interests.