[1] Radboud Univ Nijmegen, Dept Operating Theatres & Evidence Based Surg, Med Ctr Nijmegen, NL-6525 ED Nijmegen, Netherlands
[2] St Antonius Hosp, Dept Surg, Nieuwegein, Netherlands
[3] St Antonius Hosp, Dept Radiol, Nieuwegein, Netherlands
[4] Univ Amsterdam, Acad Med Ctr, Dept Surg, NL-1105 AZ Amsterdam, Netherlands
[5] Univ Med Ctr Utrecht, Dept Surg, NL-3508 GA Utrecht, Netherlands
[6] Univ Washington, Med Ctr, Dept Surg, Seattle, WA 98195 USA
[7] Univ Heidelberg Hosp, Dept Surg, Heidelberg, Germany
[8] Glasgow Royal Infirm, Dept Surg, Glasgow G4 0SF, Lanark, Scotland