[1] NIH, Digest Dis Branch, Cell Biol Sect, Bethesda, MD 20892 USA
[2] CHU Reims, Hop Robert Debre, Serv Hepatogastroenterol, Reims, France
[3] Univ Florence, Florence, Italy
[4] Erasmus MC Univ, Dept Endocrinol, Rotterdam, Netherlands
[5] Natl Univ Athens, Dept Pathophysiol, Athens, Greece
[6] Stadtspital Triemli, Inst Pathol, Zurich, Switzerland
[7] Hop Edouard Herriot, Hosp Civils Lyon, Serv Cent Anat & Cytol Pathol, Lyon, France
[8] Inst Catala Oncol IDIBELL, Dept Oncol, Barcelona, Spain
[9] Louis Mourier Univ Hosp, Dept Surg, Colombes, France