[1] Colorectal Surgery Unit. Hospital Universitario y Politécnico La Fe,Colorectal Surgery Unit
[2] Colorectal Surgery Unit. Complejo Hospitalario y Universitario A Coruña,Colorectal Surgery Unit
[3] Hospital Universitario Mutua de Tarrassa,Colorectal Surgery Unit
[4] Hospital Universitario Cruces,undefined
[5] Hospital Beata María Ana,undefined
[6] Pharmacoeconomics & Outcomes Research Iberia (PORIB),undefined
[7] Health Economics & Outcomes Research Unit (Medtronic Ibérica,undefined
[8] S.A.),undefined