Article History
Received: 27 April 2018
Accepted: 1 October 2018
First Online: 15 October 2018
Ethics approval and consent to participate
: The research protocol was approved by the Ethics Committee of Shaoxing Hospital of China Medical University. Written informed consent for using the tissue samples was obtained from the 44 patients.
: We have obtained consent for publication from the patients.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.