Received: 2 June 2020
Accepted: 12 January 2021
First Online: 18 January 2021
Ethics approval and consent to participate
: The study protocol was approved by the Ethical Committee of Human Experimentation in the Union Hospital, Tongji Medical College, Huazhong University of Science and Technology (ID: 20200177). The approval included permission to access the inpatient medical records and the waiver of informed consent of the patients since all the data were collected retrospectively and were anonymised before use.
: Not applicable.
: All the authors declare no competing interests.