1. University of Turku and Hospital District of Southwest Finland, Turku, Finland,
2. University of Kuopio, Kuopio and Hospital District of Southwest Finland, Turku, Finland
3. Finnish Heart Association, Helsinki District Office, Finland
4. University of Klaipeda, Klaipeda, Lithuania
5. West-Tallinn Central Hospital, Tallinn, Estonia
6. Helsinki Polytechnic Stadia, Helsinki, Finland
7. University of Kuopio, Kuopio, Finland