Endosonography-guided necrosectomy versus surgical treatment of infected walled-off pacreatic necrosis: a comparative study - Ardengh, José C.; Taglieri, Eloy; Micelli Neto, Otávio; Barbosa, Juliana C.; Pacheco, Débora; Santaella, Ana C.; Kemp, Rafael; Elias Júnior, Jorge; Santos, José Sebastião dos (Digestive Disease Week, 2015)