Document is current

Article History

Received: 18 June 2019

Accepted: 29 October 2019

First Online: 21 November 2019

Ethics approval and consent to participate

: The Ethical Review Committee of Yantaishan Hospital approved this study. All patients gave written informed consent before the study.

: Consent for publication was obtained from the patient (shown as Fig. ) enrolled in our study.

: The authors declare that they have no competing interests.