Ji, Pu
Zhang, Hong-Yu
Wang, Jian-Qiang
Funding for this research was provided by:
National Natural Science Foundation of China (71501192, 71571193)
Article History
Received: 2 November 2016
Accepted: 23 March 2018
First Online: 27 April 2018
Compliance with Ethical Standards
: All the authors have read and have abided by the statement of ethical standards for manuscripts. And we declare that:
: (a) The material has not been published in whole or in part elsewhere;
: (b) The paper is not currently being considered for publication elsewhere;
: (c) All authors have been personally and actively involved in substantive work leading to the manuscript, and will hold themselves jointly and individually responsible for its content;
: (d) Authors whose names appear on the submission have contributed sufficiently to the scientific work and therefore share collective responsibility and accountability for the results;
: (e) All sources of funding of all the authors that may be relevant, including current funding of posts and funding for the research being reported;
: (f) There is no conflict of interest.