1. Department of Surgery, Central Hospital of Central Finland, Jyväskylä, Finland
2. Jyväskylä University School of Business and Economics, Jyväskylä, Finland
3. Department of Anesthesiology, Central Hospital of Central Finland, Jyväskylä, Finland
4. Department of General Practice, Primary Health Care Unit, Turku University Hospital, Turku, Finland
5. Unit of Primary Health Care, Helsinki University Hospital, Helsinki, Finland