[1] Univ Hosp Leuven, Dept Pediat, Cyst Fibrosis Ctr, Louvain, Belgium
[2] Univ Hosp Leuven, Dept Pathol, Louvain, Belgium
[3] Univ Hosp Leuven, Dept Intervent Radiol, Louvain, Belgium
[4] Univ Hosp Leuven, Dept Hepatol, Louvain, Belgium
[5] Katholieke Univ Leuven, Liver Res Facil, Louvain, Belgium
[6] Ghent Univ Hosp, Dept Pathol, Ghent, Belgium
[7] Univ Hosp Leuven, Cyst Fibrosis Ctr, Dept Pulmonol, Louvain, Belgium
[8] Karolinska Inst, Novum, Dept Biosci & Nutr, Stockholm, Sweden
[9] Sahlgrens Univ Hosp, Dept Pediat, Cyst Fibrosis Ctr, Gothenburg, Sweden
[10] Catholic Univ Louvain, Clin St Luc, Dept Pediat, B-1200 Brussels, Belgium
[11] Catholic Univ Louvain, Clin St Luc, Dept Pathol, B-1200 Brussels, Belgium