1. Adelante Centre of Expertise in Rehabilitation and Audiology, Hoensbroek, The Netherlands
2. Department of Rehabilitation Medicine, School for Public Health and Primary Care, Maastricht University, Maastricht, MD, The Netherlands
3. Department of Epidemiology, Musculoskeletal Group, School for Public Health and Primary Care, Maastricht University, Maastricht, MD, The Netherlands
4. Institut Universitaire Romand de Santé au Travail, Université de Lausanne, Lausanne, Switzerland
5. Department of Epidemiology and Biostatistics, VU University Medical Center, Amsterdam HV, The Netherlands
6. Libra Rehabilitation and Audiology, Eindhoven/Weert CC, The Netherlands