[1] Catharina Hosp, Dept Surg, Eindhoven, Netherlands
[2] Med Spectrum Twente, Dept Internal Med, Enschede, Netherlands
[3] Maastricht Univ, Med Ctr, Dept Surg, Maastricht, Netherlands
[4] Atrium Med Ctr, Dept Surg, Heerlen, Netherlands
[5] Maastricht Univ, Inst Nutrim, Maastricht, Netherlands