Received: 30 March 2020
Accepted: 3 June 2021
First Online: 14 June 2021
: As the urgent situation on this emerging pathogen, the verbal consent was obtained before enrolment which was approved by the Ethics Committee of West Branch of Union hospital, Tongji Medical College, Huazhong University of Science and Technology. Confidential patient information was deleted from the entire data set prior to analysis.
: Not applicable.
: The authors declare that they have no conflict of interest.