Song, Shuang
Yu, Xiaobing
Zhang, Peng
Gu, Xiaoya
Dai, Hong
Funding for this research was provided by:
121 Project of Beijing Hospital (121-2016001)
Beijing Municipal Science & Technology Commission (Z181100001718079)
Article History
Received: 19 December 2019
Accepted: 2 June 2020
First Online: 19 June 2020
Ethics approval and consent to participate
: This study adhered to the tenets of the Declaration of Helsinki. This study was approved by the Beijing Hospital Review Board. All participants provided their written informed consent to participate in the study.
: Not applicable.
: The authors declare that they have no competing interests.