Utility of abdominal ultrasound in screening occult malignancy in the etiological study of idiopathic venous thromboembolism - Idoate Ortueta C; del Campo del Val L; Ruiz-Giménez Arrieta N; Suárez Fernández C; Friera Reyes A; Rodríguez Carnero P (Semergen, 2025)