4365Non-vitamin K oral anticoagulants in comparison to phenprocoumon in geriatric and non-geriatric patients: a retrospective, observational study on 71, 000 patients with non-valvular atrial fibrillation. (28th August 2018) - Hohmann, C; Hohnloser, S H; Jacob, J; Walker, J; Baldus, S; Pfister, R