1. Infectious Diseases Department, Saint-Pierre University Hospital, Université Libre de Bruxelles , Brussels 1000 , Belgium
2. Department of Clinical Sciences, Institute of Tropical Medicine , Antwerp 2000 , Belgium
3. Department of General Internal Medicine and Infectious Diseases, University Hospital of Antwerp , Antwerp 2000 , Belgium
4. Department of General Internal Medicine and Infectious Diseases, Ghent University Hospital , Ghent 9000 , Belgium
5. Department of Infectious Diseases and Immunity, Jessa Hospital , Hasselt 3500 , Belgium
6. Faculty of Medicine and Life Sciences, University of Hasselt , Hasselt 3500 , Belgium
7. Department of Biomedical Sciences, Institute of Tropical Medicine , Antwerp 2000 , Belgium