1. Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium
2. Unité de Recherche en Biologie Cellulaire–Namur Research Institute for Life Sciences, Namur University, Namur, Belgium
3. Health Unit, Flemish Institute for Technological Research, Mol, Belgium
4. Department of Public Health and Primary Care, Occupational and Environmental Medicine, Leuven University, Leuven, Belgium