Zhang, Liming
Zhang, Xiaoyu
Li, Huaqiang
Chen, Gang
Zhu, Meijia
Article History
Received: 3 November 2018
Accepted: 18 April 2019
First Online: 30 April 2019
Ethics approval and consent to participate
: Institutional review board of Chongqing General Hospital approved the study. Written informed consents were obtained from all participants.
: Written informed consent was obtained from patients for publication.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.