SAFETY OF SWITCHING FROM A VITAMIN K ANTAGONIST TO A NON-VITAMIN K ANTAGONIST ORAL ANTICOAGULANT IN FRAIL OLDER PATIENTS WITH ATRIAL FIBRILLATION: RATIONALE AND DESIGN OF THE FRAIL-AF RANDOMISED CONTROLLED TRIAL 6 Linda P.T. Joosten Sander van Doorn A.W. Hoes Melchior C. Nierman Nynke M. Wiersma Huiberdina L. Koek Martin E.W. Hemels Menno V. Huisman Kit C. Roes Rutger M. van den Bor Wim F. Buding Frans H. Rutten Geert-Jan Geersing BMJ Open. 2019;9(12):e032488
RkJQdWJsaXNoZXIy MTk4NDMw