Xing, Tianying
Ma, Jinghong
Jia, Chunsong
Ou, Tongwen
Funding for this research was provided by:
Beijing Municipal Administration of Hospitals Clinical Medicine Development of Special Funding Support (ZYLX201801)
Article History
Received: 24 December 2019
Accepted: 28 February 2020
First Online: 12 March 2020
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: This study was approved by the Xuanwu Hospital Ethics Committee and performed in accordance with the Declaration of Helsinki.