Received: 12 April 2019
Accepted: 9 August 2019
First Online: 14 August 2019
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China (No. KY201818). Written informed consent was obtained from the patient for the storage of samples and data, follow-up contact, and further use of samples and data for research purposes.
: Not applicable.
: The authors declare that they have no competing interests.