Zhang, Weiguo
Wang, Xiao
Miao, Youhan
Hu, Chunhong
Zhao, Weifeng
Article History
First Online: 23 February 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in the study involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: For this type of study, formal consent is not required. This retrospective review of existing data was approved by the institutional review board of The First Affiliated Hospital of Soochow University, and written informed consent was waived for all patients.