Text and Data Mining valid from 2020-04-07
Received: 28 November 2019
Accepted: 19 March 2020
First Online: 7 April 2020
Ethics approval and consent to participate
: The study was approved by the ethics committee of The First Affiliated Hospital of Fujian Medical University. All patients gave written consent for research applications of their clinical data. The patient data were anonymized in this study.
: Not applicable.
: The authors declare that they have no competing interests.