Li, Jing
Guo, Ruibao
Liu, Qing
Sun, Jingli
Wang, Huali
Article History
Received: 3 May 2019
Accepted: 14 October 2019
First Online: 28 January 2020
Compliance with Ethical Standards
: Informed consents were obtained from all patients before the study. The study was approved by the Ethics Committee of the Third Hospital of Jinan.
: The authors declare that they have no conflict of interest.