1. KU Leuven, Leuven, Belgium.
2. Centre for Ambulatory Cardiac and Angiologic Rehabilitation, Ludwigshafen, Germany.
3. Guglielmo da Saliceto Hospital, Piacenza, Italy.
4. Ruhr University Bochum, Bad Oeynhausen, Germany.
5. University Medical Center Utrecht, Utrecht, The Netherlands.
6. Sahlgrenska University Hospital/Ostra, Goteborg, Sweden.
7. German Sport University Cologne, Cologne, Germany.
8. York St John University, York, UK.
9. Wellness International Medical Centre, Stockport, UK.
10. University Hospital ‘Klinikum rechts der Isar’, Technische Universitaet Muenchen, Munich, Germany.