About the Authors

Inken Körber

Affiliations Folkhälsan Institute of Genetics, Helsinki, Finland, Research Program’s Unit, Molecular Neurology, University of Helsinki, Helsinki, Finland, Neuroscience Center, University of Helsinki, Helsinki, Finland

Shintaro Katayama

Affiliation Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden

Elisabet Einarsdottir

Affiliations Folkhälsan Institute of Genetics, Helsinki, Finland, Research Program’s Unit, Molecular Neurology, University of Helsinki, Helsinki, Finland, Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden

Kaarel Krjutškov

Affiliations Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden, Competence Centre on Health Technologies, Tartu, Estonia

Paula Hakala

Affiliations Folkhälsan Institute of Genetics, Helsinki, Finland, Research Program’s Unit, Molecular Neurology, University of Helsinki, Helsinki, Finland, Neuroscience Center, University of Helsinki, Helsinki, Finland

Juha Kere

Affiliations Folkhälsan Institute of Genetics, Helsinki, Finland, Research Program’s Unit, Molecular Neurology, University of Helsinki, Helsinki, Finland, Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden

Anna-Elina Lehesjoki

Affiliations Folkhälsan Institute of Genetics, Helsinki, Finland, Research Program’s Unit, Molecular Neurology, University of Helsinki, Helsinki, Finland, Neuroscience Center, University of Helsinki, Helsinki, Finland

Tarja Joensuu

tarja.joensuu@helsinki.fi

Affiliations Folkhälsan Institute of Genetics, Helsinki, Finland, Research Program’s Unit, Molecular Neurology, University of Helsinki, Helsinki, Finland, Neuroscience Center, University of Helsinki, Helsinki, Finland

Competing Interests

The co-author of this study Kaarel Krjutškov (KK) is an employee of Competence Centre on Health Technologies (CCHT), Tartu, Estonia and has worked as a guest researcher at Karolinska Institutet, Sweden. CCHT is a biotechnology company focused on research and product development in personal medicine, drug development and both human and veterinary reproductive medicine. CCHT supported in the author’s salary by using only money from the EU FP7-PEOPLE-2012-IAPP grant SARM (324509). Karolinska Institutet purchased every item at the catalogue price and none of the items were provided by CCHT as a gift. Thus, KK does not have any conflicts of interest to declare. This does not alter the authors’ adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: IK SK EE JK A-EL TJ. Performed the experiments: IK KK PH. Analyzed the data: IK SK EE. Wrote the paper: IK SK EE JK A-EL TJ.