[1] Univ Salerno, Paediat Sect, Scuola Med Salernitana, Dept Med Surg & Dent, I-84022 Salerno, Italy
[2] Karolinska Univ Hosp, Karolinska Inst, CLINTEC, Dept Paediat, Stockholm, Sweden
[3] Padova Univ Hosp, Dept Surg Oncol & Gastroenterol, Multivisceral Transplant Unit, Padua, Italy
[4] Hop Necker Enfants Malad, AP HP, Paediat Ctr, Hepatol & Transplantat, Paris, France
[5] Semmelweis Univ, Dept Paediat 1, Budapest, Hungary
[6] Kings Coll Hosp NHS Fdn Trust, Variety Childrens Hosp, Paediat Gastrointestinal Liver & Nutr Ctr, London, England
[7] Hosp Infantil Univ La Paz, Madrid, Spain
[8] Med Univ Graz, Div Gastroenterol & Hepatol, Dept Pediat, Graz, Austria
[9] Childrens Hosp, Paediat Gastroenterol Unit, Bordeaux, France
[10] Univ Pittsburgh, Childrens Hosp Pittsburgh, UPMC, Ctr Rare Dis Therapy,Med Ctr, Pittsburgh, PA 15213 USA
[11] Univ Hosp Geneva, Dept Paediat, Paediat Gastroenterol Unit, Swiss Ctr Liver Dis Children, Geneva, Switzerland
[12] Bambino Gesu Pediat Hosp, IRCCS, Unit Hepatometab Dis, Rome, Italy
[13] Univ Roma La Sapienza, Rome, Italy
[14] Childrens Mem Hlth Inst, Dept Gastroenterol Nutr Disorders & Pediat, Warsaw, Poland
[15] Clin Univ St Luc, UCL, Paediat Gastrohepatol, Brussels, Belgium
[16] Childrens Hosp, Sch Med, Div Paediat Gastroenterol & Hepatol, Hannover, Germany
[17] Univ Groningen, Univ Med Ctr, Ctr Liver Digest & Metab Dis, Dept Paediat, Groningen, Netherlands