Received: 15 October 2018
Accepted: 2 August 2019
First Online: 27 August 2019
Ethics approval and consent to participate
: This study was approved by the Institute Research Ethics Committee of The First Affiliated Hospital of Anhui Medical University, Hefei, China. Each patients signed the informed consent.
: Not applicable.
: The authors disclose no competing interests. There are no financial and.non-financial competing interests (political, personal, religious, ideological,academic, intellectual, commercial or any other) to declare in relation to this.