Funding for this research was provided by:
Ningbo Municipal Bureau of Science and Technology (2016A610177, 2014B82003)
Article History
Received: 17 September 2017
Accepted: 28 January 2018
First Online: 7 February 2018
Compliance with ethical standards
:
: Tiejun Shou, Hongji Zhong, and Furan Wang declare that they have no conflict of interest.
: All procedures performed in the study 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.
: This article does not contain any studies with human participants or animals performed by any of the authors.
: Informed consent was obtained from all individual participants included in the study.