AUTHOR=Bueno-Orovio Alfonso TITLE=Commentary: Atrial Rotor Dynamics Under Complex Fractional Order Diffusion JOURNAL=Frontiers in Physiology VOLUME=9 YEAR=2018 URL=https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2018.01386 DOI=10.3389/fphys.2018.01386 ISSN=1664-042X