He, Fei
Ni, Jun
Huang, Jun-Ai
Liu, Yao
Wu, Chao
Wang, Jun
Article History
Received: 4 January 2018
Accepted: 30 April 2018
First Online: 8 May 2018
Compliance with ethical standards
:
: The Authors declare that they have no conflict of interest.
: This study was according to the ministry of health "involves people of biomedical research ethics review method (trial) (2007)”, and performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki. In this study, subjects’ rights and interests are fully protected. There is no potential risk to the subjects. The board of ethics committee agreed to the study work as planned.
: Patient consent was not required in this study since intervention was not involved and all data were analyzed anonymously.