Each manuscript is peer-reviewed by two independent refer-ees. If statistical analysis of data is included, a statistician will be additionally asked to review the manuscript. A decision to accept or reject manuscripts will be made by the Editorial Board. The review and publication processes that are not described in the Instructions to Authors will incorporate the Editorial Policy Statements Approved by the Council of Science Editors Board of Directors (http://www.councilscienceeditors.org/). During peer review process, followings are required to reviewers: reviewers’ opinion should be objective; reviewers should have no conflict of interest with respect to the research, the authors and/or the research funders; reviewers should point out relevant published work which is not yet cited; reviewed article should be treated confidentially.