In patients with non-valvular atrial fibrillation (NVAF), the use of non-vitamin K antagonist oral anticoagulants ... Researchers from the Department of Cardiology at the Sun Yat-sen Memorial Hospital of Sun Yat-sen University in ... Gastrointestinal (GI) cancers were found at a mean rate of about one in 37 patients with atrial fibrillation (AFib) ...