Liu, Zhuo
Tang, Shiying
Tian, Xiaojun
Zhang, Hongxian
Wang, Guoliang
Zhang, Shudong
Ma, Lulin
Article History
Received: 4 September 2019
Accepted: 20 January 2020
First Online: 28 January 2020
Ethics approval and consent to participate
: The study was approved by the ethics committees of Peking University Third Hospital. Informed consent was obtained from all individual participants included in the study. The informed consent obtained was written.
: Not Applicable.
: All authors declare that they have no competing interests.