CBCRisk model to determine the risk of contralateral breast cancer in sporadic breast cancer María Domingo Bretón; Marta Allué Cabañuz; Néstor Castán Villanueva; María Dolores Arribas del Amo; Ismael Gil Romea; Antonio Güemes Sánchez;

Gastroesophageal reflux management after vertical sleeve gastrectomy Ester Martínez Negro; Sagrario Martínez Cortijo;

Evaluation of the usefulness of the Clavien-Dindo classification of surgical complications Henry Golder; Daniel Casanova; Vassilios Papalois;