Text and Data Mining valid from 2020-03-14
Received: 22 August 2019
Accepted: 17 February 2020
First Online: 14 March 2020
Ethics approval and consent to participate
: This study was approved by the Ethical Committee of Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology. The consent of the subjects was waived.
: Not applicable.
: The authors declare that they have no competing interests.