Zhang, Shanshan
Liu, Xiaoli
Ge, Li Li
Li, Kailin
Sun, Yongchao
Wang, Fang
Han, Ying
Sun, Chao
Wang, Jue
Jiang, Wen
Xin, Qian
Xu, Chaoyue
Chen, Yuan
chen, Ou
Zhang, Zhaohua
Luan, Yun
Article History
Received: 24 October 2019
Accepted: 28 February 2020
First Online: 20 March 2020
Ethics approval and consent to participate
: All participants were provided with written informed consent at the time of recruitment. And this study was approved by the Ethics Committee of the Second Hospital of Shanodng University.
: The authors declare that they have no competing interests.