1. Radboud University Medical Center/Radboud Institute for Health Sciences/Scientific Center for Quality of Healthcare (IQ healthcare), 114 IQ healthcare, 6500 HB Nijmegen Geert Grooteplein 21, Nijmegen, The Netherlands
2. The Dartmouth Institute for Health Policy and Clinical Practice, 1 Medical Center Drive; WTRB Level 5 Lebanon, NH, USA
3. Health Quality & Safety Commission New Zealand, Wellington, Wellington, New Zealand
4. NHS RightCare, 5th Floor Stephenson House, 75 Hampstead Road, London, UK