Wu, Jianhong
Han, Zhihua
Wang, Qiugen
Wu, Xiaoming
Article History
Received: 19 August 2018
Accepted: 6 January 2019
First Online: 21 January 2019
Compliance with ethical standards
:
: Given the retrospective nature of this study, written consent was not obtained. However, all patient records were anonymized prior to the analysis. Related data were obtained from the hospital’s electronic and written medical records. The study was reviewed by and obtained approval from the Institutional Review Board of Shanghai General Hospital.
: The authors declare that they have no competing interests.