Received: 4 October 2019
Accepted: 17 January 2020
First Online: 31 January 2020
Ethics approval and consent to participate
: All the procedures including the collection, processing and analysis of tumor samples in this study were approved by the Institutional Review Board of the Daping hospital. Written informed consents were obtained from both patients.
: The written informed consents for publication were obtained from both patients.
: The authors declare that they have no competing interests.