[1] Univ Groningen, Univ Med Ctr Groningen, Dept Gastroenterol & Hepatol, POB 30-001, NL-9700 RB Groningen, Netherlands
[2] Univ Groningen, Univ Med Ctr Groningen, Dept Endocrinol, Groningen, Netherlands
[3] Univ Groningen, Univ Med Ctr Groningen, Dept Lab Med, Groningen, Netherlands
[4] Harvard Med Sch, Boston Childrens Hosp, Dept Anesthesiol, Boston, MA 02115 USA
[5] Harvard Med Sch, Boston Childrens Hosp, Dept Surg, Boston, MA 02115 USA
[6] Univ Groningen, Univ Med Ctr Groningen, Dept Hepatopancreatobiliary Surg & Liver Transpla, Groningen, Netherlands