[1] Univ Hosp Masstricht, Dept Surg, NL-6202 AZ Maastricht, Netherlands
[2] Univ Hosp Masstricht, Dept Surg & Nephrol, NL-6202 AZ Masstricht, Netherlands
[3] Univ Med Ctr Utrecht, Dept Nephrol, Utrecht, Netherlands
[4] Univ Groningen Hosp, Dept Radiol, Groningen, Netherlands
[5] Hospital Midden Twente Hengelo, Hengelo, Netherlands