1. Department of Cardiothoracic Surgery Odense University Hospital Odense Denmark
2. OPEN, Open Patient data Explorative Network Odense University Hospital Odense Denmark
3. Department of Surgery, St Vincent's Hospital University of Melbourne Melbourne Victoria Australia
4. Department of Epidemiology and Preventive Medicine Monash University Melbourne Victoria Australia
5. Respiratory Medicine The Alfred Hospital Melbourne Victoria Australia
6. Department of Medicine Monash University Melbourne Victoria Australia