AUTHOR=KORANTZOPOULOS PANAGIOTIS , LETSAS KONSTANTINOS , LIU TONG TITLE=Xanthine Oxidase and Uric Acid in Atrial Fibrillation JOURNAL=Frontiers in Physiology VOLUME=3 YEAR=2012 URL=https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2012.00150 DOI=10.3389/fphys.2012.00150 ISSN=1664-042X