1. Department of Neuro-Urology, Balgrist University Hospital, University of Zürich, 8008 Zürich, Switzerland
2. Department of Health Sciences and Technology, ETH Zürich, 8092 Zürich, Switzerland
3. Swiss Paraplegic Research, 6207 Nottwil, Switzerland
4. Department of Health Sciences and Medicine, University of Lucerne, 6002 Lucerne, Switzerland
5. Spinal Cord Injury Centre, Balgrist University Hospital, University of Zürich, 8008 Zürich, Switzerland