1. Clinical Laboratory, Jessa Hospital, Hasselt, Belgium
2. Faculty of Medicine and Pharmacy, Department of In Vitro Toxicology and Dermato-Cosmetology, Vrije Universiteit Brussel, Brussels, Belgium
3. Faculty of Medicine and Life Sciences, Department of Immunology and Infection, Hasselt University, Hasselt, Belgium
4. Department of Neurosurgery, Jessa Hospital, Hasselt, Belgium
5. Department of Infectious Diseases and Immunity, Jessa Hospital, Hasselt, Belgium