1 Center for Rehabilitation in Global Health Systems, Department of Health Sciences and Medicine, University of Lucerne, Switzerland; Swiss Paraplegic Research, Nottwil, Switzerland.
2 Department of Health Care Management, Berlin University of Technology, Berlin, Germany; European Observatory on Health Systems and Policies.
3 Department of Health Care Management, Berlin University of Technology, Berlin, Germany; European Observatory on Health Systems and Policies. Electronic address: rbusse@tu-berlin.de.