Video-assisted Laparoscopic Debridement for Retroperitoneal Pancreatic Collections: A Reliable Step-up Approach - García-Ureña MA; López-Monclús J; Melero-Montes D; Blázquez-Hernando LA; Castellón-Pavon C; Calvo-Durán E; Gordo-Vidal F; Aguilera-Del Hoyo LF (American Surgeon, 2013)