Zhou, Jing
Liu, Sixing
Sun, Yuanjie
Wang, Weiming
Liu, Zhishun
Article History
Received: 18 January 2020
Accepted: 15 July 2020
First Online: 25 July 2020
Ethics approval and consent to participate
: Central ethical approval has been confirmed from China Academy of Chinese Medical Sciences (ethical number: 2018-161-KY), and we will not begin recruiting at other centers in the trial until local ethical approval has been obtained. Informed consent will be obtained from each patient before the performance of any study-specific procedure.
: The authors declare that they have no competing interests.