Causes of death in patients with venous thromboembolism anticoagulated with direct oral anticoagulants: a systematic review and meta-analysis - Gómez-Outes, A; Terleira-Fernández, A I; Lecumberri, R; Suárez-Gea, M L; Calvo-Rojas, G; Vargas-Castrillón, E (Semin Thromb Hemost, 2018)