Li, Quanyi
Zhou, Yongchun
Article History
Received: 1 April 2020
Accepted: 16 September 2020
First Online: 23 September 2020
Ethics approval and consent to participate
: Ethical approval was obtained from the Ethics Committee of the Shaanxi Provincial People’s Hospital (No. 2011–009). Each author certifies that all investigations were conducted in conformity with ethical principles. Written informed consent was obtained from all patients included in the study.
: All patients provided signed informed consent for the publication of their personal details in this article.
: The authors declare that they have no competing interests.