1. Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, Clinical Biochemistry Department, Clos-Chapelle-aux-Champs, 30-UCL 30.46, 1200 Brussels, Belgium
2. Scientific Section of the Medical Staff, Belgium Armed Forces, Queen Astrid Military Hospital, Rue Bruyn, 2, 1120 Brussels, Belgium