Dr. Renato Lopes and Dr. C. Michael Gibson Discuss: Rivaroxaban Versus Warfarin In Patients With Bioprosthetic Mitral Valves And Atrial Fibrillation Or Flutter: Primary Results From The RIVER Randomized Trial November 14, 2020 2020 | AHA | Cardiology Tags: 2020, AHA, Cardiology Article Navigation Dr. Prem Pais and Dr. Serge Korjian Discuss: A Polypill For Primary Prevention Of Cardiovascular Disease In Intermediate Risk People: Results Of The International Polycap Study (TIPS)-3 Dr. Otavio Berwanger and Dr. C. Michael Gibson Discuss: Rivaroxaban Versus Warfarin In Patients With Bioprosthetic Mitral Valves And Atrial Fibrillation Or Flutter: Primary Results From The RIVER Randomized Trial