Received: 26 March 2019
Accepted: 31 July 2019
First Online: 15 August 2019
Ethics approval and consent to participate
: This study was approved by the Affiliated Hospital of Zunyi Medical University institutional review board (IRB). The data were obtained from TCGA (ExternalRef removed). Informed consent has been obtained from all individual participants included in the study was approved by the Institutional review Board.
: Not applicable.
: The authors declare that they have no competing interests.