1. deCODE genetics/Amgen Inc. , Sturlugata 8, 102 Reykjavik , Iceland
2. Faculty of Medicine, School of Health Sciences, University of Iceland , Vatnsmyrarvegur 16, 101 Reykjavik , Iceland
3. School of Humanities, University of Iceland , Saemundargata 2, 102 Reykjavik , Iceland
4. Department of Psychiatry, Landspitali-National University Hospital , Hringbraut 101, 101 Reykjavik , Iceland
5. Department of Geriatric Medicine, Landspitali University Hospital , Hringbraut 101, 101 Reykjavik , Iceland
6. Department of Internal Medicine, Landspitali University Hospital , Hringbraut 101, 101 Reykjavik , Iceland
7. School of Engineering and Natural Sciences, University of Iceland , Taeknigardur, Dunhagi 5, 107 Reykjavik , Iceland
8. Faculty of Electrical and Computer Engineering, University of Iceland , Taeknigardur, Dunhagi 5, 107 Reykjavik , Iceland