Long-term outcome of patients with persistent vascular obstruction on computed tomography pulmonary angiography 6 months after acute pulmonary embolism - Golpe, R; de Llano, L A; Castro-Añón, O; Vázquez-Caruncho, M; González-Juanatey, C; Fariñas, M C (Acta Radiol, 2012)