Yang, Kang
Zhu, Xiaodong
Feng, Yulan
Shen, Fanxia
Chen, Jie
Fu, Ningzhen
Sun, Jialan
Fu, Yi
Funding for this research was provided by:
National Nature Science Foundation of China (81771281)
Article History
Received: 24 September 2019
Accepted: 23 January 2020
First Online: 28 January 2020
Ethics approval and consent to participate
: There is no written or verbal consent because this is a retrospective study that does not apply to the STROBE guidelines. All the data came from the database, and the whole process was approved by the Ruijin Hospital Ethics Committee.
: Not applicable.
: The authors declare that they have no competing interests.