1. Department of Cardiology, Herlev Gentofte Hospital, Denmark
2. Department of Epidemiology Research, Statens Serum Institut, Denmark
3. Department of Neurosurgery, Copenhagen University Hospital Rigshospitalet, Denmark
4. Department of Clinical Medicine, University of Copenhagen, Denmark
5. Department of Medicine, Stanford University School of Medicine, California
6. Department of Cardiology, Copenhagen University Hospital Rigshospitalet, Denmark