[1] Department of Gastrointestinal Surgery,
[2] Leiden University Medical Hospital Center,undefined
[3] Post Office Box 9600,undefined
[4] 2300 RC Leiden,undefined
[5] The Netherlands,undefined
[6] Department of Medical Decision Making,undefined
[7] Leiden University Medical Hospital Center,undefined
[8] Post Office Box 9600,undefined
[9] 2300 RC Leiden,undefined
[10] The Netherlands,undefined
[11] Department of Hepatogastroenterology,undefined
[12] Leiden University Medical Hospital Center,undefined
[13] Post Office Box 9600,undefined
[14] 2300 RC Leiden,undefined
[15] The Netherlands,undefined