[1] Univ Amsterdam, Acad Med Ctr, Dept Gastroenterol & Hepatol, Meibergdreef 9, NL-1105 AZ Amsterdam, Netherlands
[2] Karolinska Univ Hosp Huddinge, Karolinska Inst, CIM, Dept Med, F59, S-14186 Stockholm, Sweden
[3] Univ Amsterdam, Acad Med Ctr, Dept Celbiol & Histol, Meibergdreef 9, NL-1105 AZ Amsterdam, Netherlands