1. Department of Medical and Scientific Affairs, C-support , ’s Hertogenbosch , The Netherlands
2. Department of Sports and Exercise Medicine, DeSportarts , Utrecht , The Netherlands
3. Department of Occupational Health, Dutch Scientific Society of Occupational Health , Utrecht , The Netherlands
4. Department of Psychiatry, Amsterdam University Medical Center, Amsterdam, and PsyQ , The Hague , The Netherlands
5. Department of Pulmonary Medicine, Erasmus University Medical Centre , Rotterdam , The Netherlands