Clinical characteristics, aetiology and mortality/recurrence risk factors of acute cholangitis in patients with and without biliary stent Adrián Sousa; Ana Alonso-Herrero; María Teresa Pérez-Rodríguez; Olalla Lima; Antón Otero; Milagros Suárez; Rebeca Longueira; Lucía Martínez-Lamas; Andrés Nodar; Manuel Crespo;