About the Authors

Jesús de Pedro-Cuesta

jpedro@isciii.es

Affiliation Department of Applied Epidemiology, National Centre for Epidemiology, Carlos III Institute of Health; and Consortium for Biomedical Research in Neurodegenerative Diseases (CIBERNED), Madrid, Spain

Ignacio Mahillo-Fernandez

Affiliation Department of Applied Epidemiology, National Centre for Epidemiology, Carlos III Institute of Health; and Consortium for Biomedical Research in Neurodegenerative Diseases (CIBERNED), Madrid, Spain

Miguel Calero

Affiliation Carlos III Institute of Health, and Consortium for Biomedical Research in Neurodegenerative Diseases (CIBERNED), Majadahonda, Spain; and Alzheimer's Disease Center, Reina Sofia Foundation, Madrid, Spain

Alberto Rábano

Affiliation Alzheimer's Disease Center, Reina Sofia Foundation, Madrid, Spain

Mabel Cruz

Affiliation Karolinska Institute, Neurology Division, Stockholm, Sweden

Åke Siden

Affiliation Karolinska Institute, Neurology Division, Stockholm, Sweden

Pablo Martínez-Martín

Affiliation Department of Applied Epidemiology, National Centre for Epidemiology, Carlos III Institute of Health; and Consortium for Biomedical Research in Neurodegenerative Diseases (CIBERNED), Madrid, Spain

Henning Laursen

Affiliation National Hospital, Copenhagen, Denmark

María Ruiz-Tovar

Affiliation Department of Applied Epidemiology, National Centre for Epidemiology, Carlos III Institute of Health; and Consortium for Biomedical Research in Neurodegenerative Diseases (CIBERNED), Madrid, Spain

Kåre Mølbak

Affiliation Statens Serum Institut, Copenhagen, Denmark

on behalf of the EUROSURGYCJD Research Group

Membership of the EUROSURGYCJD Research Group is provided in the Acknowledgments.

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JPC M. Calero KM. Performed the experiments: IMF. Analyzed the data: IMF JPC. Contributed reagents/materials/analysis tools: M. Cruz AS KM HL AR. Wrote the paper: JPC M. Calero KM M. Cruz HL MRT PMM AR. Contributed with comments and approved the manuscript content: JPC IMF M. Calero KM M. Cruz HL MRT PMM AR AS.