1. Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, Gothenburg University, Sweden
2. Department of Medicine, South Älvsborg Hospital, Borås, Sweden
3. Department of Cardiothoracic Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden
4. Department of Anesthesiology and Intensive Care, Sahlgrenska University Hospital, Gothenburg, Sweden
5. Department of Cardiology, Sahlgrenska University Hospital, Gothenburg, Sweden
6. Statistiska Konsultgruppen, Gothenburg, Sweden
7. Department of Ophthalmology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden