Received: 26 November 2019
Accepted: 13 April 2020
First Online: 23 April 2020
Ethics approval and consent to participate
: This retrospective study was approved by the Ethics Committee of Huazhong University of Science and Technology,Tongji Medical College, that also waived the requirement of informed consent for the use of the patient’s medical data.
: Not applicable.
: The authors declare that they have no competing interests.