Need for a targeted perioperative antibiotic treatment protocol for patients with preoperative biliary drainage undergoing pancreaticoduodenectomy Judith Camps-Lasa; María Isabel García-Domingo; Eric Herrero Fonollosa; María Luisa Galaviz Sosa; María Galofré Recasens; Aurora Rodríguez Campos; Xavier Serra-Aracil; Esteban Cugat Andorrá;

Non-inferiority clinical trial. Features and practical considerations Xavier Serra-Aracil; Marc Fradera;

Statistical Analysis Plan (SAP): What is it and how to develop it? Marc Fradera; Xavier Serra-Aracil;