Jonviea D Chamberlain1,2, Martin W G Brinkhof3,4. 1. Swiss Paraplegic Research, Nottwil, Switzerland. jonviea.chamberlain@paraplegie.ch. 2. Health Sciences and Health Policy, University of Lucerne, Luzern, Switzerland. jonviea.chamberlain@paraplegie.ch. 3. Swiss Paraplegic Research, Nottwil, Switzerland. martin.brinkhof@paraplegie.ch. 4. Health Sciences and Health Policy, University of Lucerne, Luzern, Switzerland. martin.brinkhof@paraplegie.ch.