Received: 4 September 2018
Accepted: 1 October 2019
First Online: 20 October 2019
Ethics approval and consent to participate
: The study was approved by the clinical research ethics committee of Wuhan Puai Hospital. Reference No. 2013–049-02. And informed written consent was obtained from every single patient before receiving surgery.
: Not applicable.
: The authors declare that they have no competing interests.