[1] Catholic Univ Louvain, Fac Med, Brussels, Belgium
[2] Catholic Univ Louvain, Dept Paediat, Paediat Gastroenterol & Hepatol Unit, Clin Univ St Luc, Brussels, Belgium
[3] Catholic Univ Louvain, Inst Rech Expt & Clin, Pole Pathol Rhumatismales Syst & Inflammatoires, Brussels, Belgium
[4] Catholic Univ Louvain, Duve Inst, Genet Autoimmune Dis & Canc, Brussels, Belgium
[5] Clin Univ St Luc, Dept Pediat Hematol & Oncol, Brussels, Belgium