Received: 3 October 2019
Accepted: 15 June 2020
First Online: 7 July 2020
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of Daping Hospital and the Research Institute of Surgery, the Army Medical University of PLA (Chong Qing, China). The experiment complied with the Declaration of Helsinki and written informed consent was obtained from all patients. The clinical registration number is ExternalRef removed.
: The authors declare that they have no competing interests.