[1] Univ Catholic Louvain, Dept Intens Care, Clin St Luc, Ave Hippocrate 10, B-1200 Brussels, Belgium
[2] Univ Catholic Louvain, Dept Clin Chem, Clin St Luc, B-1200 Brussels, Belgium
[3] Univ Catholic Louvain, Louvain Ctr Toxicol & Appl Pharmacol LTAP, B-1200 Brussels, Belgium
[4] Univ Catholic Louvain, Dept Pneumol, Clin St Luc, B-1200 Brussels, Belgium
[5] Univ Catholic Louvain, Cyst Fibrosis Reference Ctr, Clin St Luc, B-1200 Brussels, Belgium