Funding for this research was provided by:
Young Scientists Fund (81502747, 81702171)
Received: 20 August 2018
Accepted: 23 November 2018
First Online: 18 December 2018
Ethics approval and consent to participate
: This study was approved by the Ethical Committee of West China Hospital, Sichuan University. Consent of participants was gained prior to inclusion in the study.
: Written informed consent was gained from the patients for publication of this article and any accompanying images.
: The authors declare that they have no competing interests.