1. Faculty of Medicine, University of Iceland, Reykjavík, Iceland;
2. Department of Epidemiology and Biostatistics, The Netherlands Cancer Institute, Amsterdam, The Netherlands;
3. Department of Pathology, The Netherlands Cancer Institute, Amsterdam, The Netherlands;
4. Landspitali University Hospital Iceland, Reykjavík, Iceland;
5. University of Iceland, Reykjavík, Iceland;
6. Icelandic Heart Association, Kópavogur, Iceland;
7. Department of Pathology, Landspitali-University Hospital, Iceland;
8. Department of Internal Medicine, Stanford University, Stanford, CA, USA