[1] Charite Univ Med Berlin, Dept Gastroenterol & Hepatol, DE-13353 Berlin, Germany
[2] Hop Beaujon, Serv Gastroenterol, Clichy, France
[3] Univ Verona, Med & Surg Gen Surg Sect, I-37100 Verona, Italy
[4] Univ Uppsala Hosp, Dept Radiol, Uppsala, Sweden
[5] Inst Catala Oncol, Barcelona, Spain
[6] Univ Bern, Inselspital, CH-3010 Bern, Switzerland
[7] Erasmus MC, Dept Internal Med, Endocrinol Sect, Rotterdam, Netherlands
[8] Hadassah Univ Hosp, Dept Endocrinol & Metab, IL-91120 Jerusalem, Israel
[9] MHH, Klin Nukl Med, Hannover, Germany
[10] Rigshosp Blegdamsvej, Dept Surg, Copenhagen, Denmark
[11] Dana Farber Canc Inst, Boston, MA 02115 USA
[12] Charite Univ Med Berlin, Dept Internal Med, Div Gastroenterol & Hepatol, Berlin, Germany