1. Department of Rehabilitation Medicine, University Medical Center Groningen, Center for Rehabilitation, Groningen, the Netherlands;
2. Department of Vascular Surgery, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands;
3. Department of Surgery, Martini Hospital Groningen, Groningen, the Netherlands;
4. Department of Rehabilitation Medicine, University Medical Center Groningen, Center for Rehabilitation, Groningen, the Netherlands;Department of Oral and Maxillofacial Surgery, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands