About the Authors

Aki J. Käräjämäki

Contributed equally to this work with: Aki J. Käräjämäki, Olli-Pekka Pätsi

Affiliation Research Unit of Internal Medicine, Medical Research Center Oulu, Oulu University Hospital, and University of Oulu, Oulu, Finland

Olli-Pekka Pätsi

Contributed equally to this work with: Aki J. Käräjämäki, Olli-Pekka Pätsi

Affiliation Research Unit of Internal Medicine, Medical Research Center Oulu, Oulu University Hospital, and University of Oulu, Oulu, Finland

Markku Savolainen

Affiliation Research Unit of Internal Medicine, Medical Research Center Oulu, Oulu University Hospital, and University of Oulu, Oulu, Finland

Y. Antero Kesäniemi

Affiliation Research Unit of Internal Medicine, Medical Research Center Oulu, Oulu University Hospital, and University of Oulu, Oulu, Finland

Heikki Huikuri

Affiliation Research Unit of Internal Medicine, Medical Research Center Oulu, Oulu University Hospital, and University of Oulu, Oulu, Finland

Olavi Ukkola

olavi.ukkola@oulu.fi

Affiliation Research Unit of Internal Medicine, Medical Research Center Oulu, Oulu University Hospital, and University of Oulu, Oulu, Finland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MS YAK HH OU. Performed the experiments: MS YAK HH OU. Analyzed the data: O-PP AJK OU. Contributed reagents/materials/analysis tools: YAK HH OU. Wrote the paper: O-PP AJK MS YAK HH OU.