Received: 29 October 2019
Accepted: 5 June 2020
First Online: 18 June 2020
Ethics approval and consent to participate
: All patients were informed about the risk and outcomes of the procedure and provided informed consent. Ethical clearance was granted by 2nd Clinical Medical College of Jinan University and also approved research Grand Number LL-KY-2019227.
: Not applicable.
: The authors declare that they have no competing interests.