Funding for this research was provided by:
Science and Technology Research Foundation of Zhejiang Province (No.2014C04008-1)
Article History
Received: 2 February 2018
Accepted: 16 April 2018
First Online: 24 April 2018
Compliance with ethical standards
:
: Bin Zheng, Xiaolin Wang, and Jiexiong Feng declare that they have no conflict of interest. Yixiong Zheng has received research Grants from Science and Technology Research Foundation of Zhejiang Province, China (No. 2014C04008-1).
: Ethics approval was obtained from the <i>Health Research Ethics Board</i> of the University of Alberta before the recruitment of human subjects. Written consent was obtained from each participant prior to entering the study. All procedures performed in studies 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.