K, P., M. George, and L. Joseph. “A REVIEW ON A COMPARATIVE STUDY ON EFFECTIVENESS AND SAFETY OF NOVEL ORAL ANTICOAGULANTS IN PATIENTS WITH ATRIAL FIBRILLATION”. International Journal of Pharmaceutical and Biological Science Archive, Vol. 7, no. 2, Apr. 2019, http://ijpba.in/index.php/ijpba/article/view/122.