Gan, Yongbo
Yang, Zhijian
Mei, Wei
Zhu, Chang
Article History
First Online: 7 November 2019
Compliance with ethical standards
:
: Both authors declare that they have no conflict of interest.
: This retrospective observational study was approved on 5 July 2018 by the Medicine Ethics Committee of Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology (approved number TJ-IRB20180614) and was declared to Chinese Clinical Trial Register (registration number ChiCTR1800015143).
: The personal information that helps identify patients in all cases is removed during the data collection. The Medicine Ethics Committee of Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology permitted the requirement for written informed consent was waived.