AUTHOR=Hancock John M. TITLE=Circles within circles: commentary on Ghosal et al. (2013) “Circ2Traits: a comprehensive database for circular RNA potentially associated with disease and traits” JOURNAL=Frontiers in Genetics VOLUME=5 YEAR=2015 URL=https://www.frontiersin.org/journals/genetics/articles/10.3389/fgene.2014.00459 DOI=10.3389/fgene.2014.00459 ISSN=1664-8021