1. Environmental Department [Milieudienst], University Hospital, Gent University, Gent, Belgium
2. Central Administration, Secretariat of the Board of Governors, Faculty of Medicine and Health Sciences, University Hospital, Gent University, Gent, Belgium
3. Department of Public Health and Primary Care, Faculty of Medicine and Health Sciences, Gent University, Gent University Hospital, Gent, Belgium
4. Clinical Chemistry Laboratory, Gent University Hospital, Gent University, Gent, Belgium
5. Department of Public Health and Primary Care, Faculty of Medicine, Leuven University, University Hospital Leuven, Gasthuisberg Campus, Leuven, Belgium
6. University Ghent, Faculty of Economics and Business Administration, Gent, Belgium
7. Safety Department [Preventiedienst], University Hospital, Gent University, Gent, Belgium