[1] Pontificia Univ Catolica Chile, Fac Med, Expt Surg & Simulat Ctr, Santiago, Chile
[2] Pontificia Univ Catolica Chile, Fac Med, Dept Digest Surg, Santiago, Chile
[3] Pontificia Univ Catolica Chile, Fac Med, Dept Orthopaed & Trauma, Santiago, Chile
[4] Peter MacCallum Canc Ctr, Dept Canc Surg, Melbourne, Vic, Australia
[5] Univ Melbourne, Melbourne, Vic, Australia