1. Life Supporting Technologies, Departamento de Tecnología Fotónica y Biongeniería, Universidad Politécnica de Madrid, Madrid, Spain
2. VTT Technical Research Centre of Finland Ltd, Oulu, Finland
3. Universitat Politècnica de València, Valencia, Spain
4. Laboratory of Medical Informatics, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
5. Clinic for Cardiac and Pulmonary Rehabilitation, Rosenquelle, Aachen, Germany
6. Department of Cardiology, RWTH Aachen University, Aachen, Germany
7. Maastricht University Medical Centre, Dept. of Cardiology, Maastricht, The Netherlands
8. VTT Technical Research Centre of Finland Ltd, Tampere, Finland
9. Centre Suisse d’Electronique et de Microtechnique SA, Neuchatel, Switzerland
10. Hull York Medical School, University of Hull, Hull, UK
11. Philips Research, Eindhoven, The Netherlands
12. Heart Manual Department, NHS Lothian, Scotland, UK