Funding for this research was provided by:
Scientific Foundation of Fuzhou General Hospital of PLA (200745)
Article History
Received: 24 September 2017
Accepted: 8 March 2018
First Online: 15 March 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the principles of 1964 Helsinki declaration. Informed consent was obtained from all individual participants included in the study.