About the Authors

Astridur Palsdottir

astripal@hi.is

Affiliation Institute for Experimental Pathology, University of Iceland, Keldur, Reykjavik, Iceland

Agnar Helgason

Affiliations deCODE Genetics, Reykjavik, Iceland, Department of Anthropology, University of Iceland, Oddi, Reykjavik, Iceland

Snaebjorn Palsson

Affiliations deCODE Genetics, Reykjavik, Iceland, Institute of Biology, University of Iceland, Askja, Reykjavik, Iceland

Hans Tomas Bjornsson

Affiliation Johns Hopkins University School of Medicine, McKusick-Nathans Institute of Genetic Medicine, Department of Pediatrics, Baltimore, Maryland, United States of America

Birkir Thor Bragason

Affiliation Institute for Experimental Pathology, University of Iceland, Keldur, Reykjavik, Iceland

Solveig Gretarsdottir

Affiliation deCODE Genetics, Reykjavik, Iceland

Unnur Thorsteinsdottir

Affiliations deCODE Genetics, Reykjavik, Iceland, Faculty of Medicine, University of Iceland, Laeknagardur, Reykjavik, Iceland

Elias Olafsson

Affiliations Faculty of Medicine, University of Iceland, Laeknagardur, Reykjavik, Iceland, Department of Neurology, LSH University Hospital, Fossvogi, Reykjavik, Iceland

Kari Stefansson

Affiliations deCODE Genetics, Reykjavik, Iceland, Faculty of Medicine, University of Iceland, Laeknagardur, Reykjavik, Iceland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AP AH HTB BTB SG UT. Performed the experiments: AP AH SG. Analyzed the data: AP AH SP HTB BTB SG UT EO KS. Contributed reagents/materials/analysis tools: AP AH SP BTB SG UT EO KS. Wrote the paper: AP AH SP HTB BTB SG UT EO KS.