Received: 29 October 2019
Accepted: 15 April 2020
First Online: 1 May 2020
Ethics approval and consent to participate
: This study was approved by the ethics committee of Sir Run Run Shaw Hospital (20181129–2); The affiliated hospital of Guizhou Medical University (2019001-K); Guizhou provincial people’s hospital (-32). Written informed consent was obtained from all participants.
: Not applicable.
: No potential conflict of interest was reported by the authors.