1. University of Turku, Turku, , Primary Health Care Organisation of the City of Vantaa, Finland
2. University of Turku, Turku, Municipality of Imatra, Finland
3. Hospital District of Helsinki and Uusimaa, Finland
4. University of Kuopio, Kuopio, Finland
5. University of Turku, Turku, Finland, Pirkanmaa Hospital District, Tampere, Finland