1. Department of Primary and Community CareRadboud University Medical Center, Radboud Institute for Health Sciences Nijmegen the Netherlands
2. Coma Science Group, GIGA Consciousness, University of Liège Liège Belgium
3. Department of NeurologySlingeland Hospital Doetinchem the Netherlands
4. Coma Science Group, GIGA ConsciousnessUniversity of Liège Liège Belgium
5. Department of Primary and Community CareRadboud University Medical Center, Radboud Institute for Health Sciences, and Joachim en Anna Center for Specialized Geriatric Care Nijmegen the Netherlands