1. Swiss Paraplegic Centre, Nottwil, Switzerland
2. Basel University Hospital, Psychosomatic Medicine - Communication in Medicine, Basel, Switzerland
3. Faculty of Health Sciences and Medicine, University of Lucerne, Lucerne, Switzerland
4. Department of Urology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
5. University of Groningen, University Medical Centre Groningen, Department of rehabilitation medicine, Groningen, the Netherlands
6. Center of Excellence in Rehabilitation Medicine, Brain Center Rudolf Magnus, University Medical Center Utrecht and De Hoogstraat Rehabilitation, Utrecht, the Netherlands
7. Swiss Paraplegic Research, Nottwil, Switzerland