Received: 12 December 2019
Accepted: 18 May 2020
First Online: 17 June 2020
Ethics approval and consent to participate
: The study protocol was approved by the Ethics Committees of the First Affiliated Hospital of University of Science and Technology of China, Division of Life Sciences and Medicine, and all participants provided written informed consent.
: Not applicable.
: All authors declare that they have no conflict of interests.