About the Authors

Krister Melén

krister.melen@thl.fi

Affiliation Department of Infectious Disease Surveillance and Control, National Institute for Health and Welfare, Helsinki, Finland

Markku Partinen

Affiliation Helsinki Sleep Clinic, Vitalmed Research Centre Helsinki and Haartman Institute, University of Helsinki, Helsinki, Finland

Janne Tynell

Affiliation Department of Infectious Disease Surveillance and Control, National Institute for Health and Welfare, Helsinki, Finland

Maarit Sillanpää

Affiliation Department of Infectious Disease Surveillance and Control, National Institute for Health and Welfare, Helsinki, Finland

Sari-Leena Himanen

Affiliation University of Tampere and Department of Clinical Neurophysiology, Tampere University Hospital, Tampere, Finland

Outi Saarenpää-Heikkilä

Affiliation Department of Pediatrics, Tampere University Hospital, Tampere, Finland

Christer Hublin

Affiliation Finnish Institute of Occupational Health, Helsinki, Finland

Päivi Olsen

Affiliation Department of Child Neurology, Oulu University Hospital, Oulu, Finland

Jorma Ilonen

Affiliations Department of Clinical Microbiology, University of Eastern Finland, Kuopio, Finland, Immunogenetics Laboratory, University of Turku, Turku, Finland

Hanna Nohynek

Affiliation Department of Vaccines and Immune Protection, National Institute for Health and Welfare, Helsinki, Finland

Ritva Syrjänen

Affiliation Department of Vaccines and Immune Protection, National Institute for Health and Welfare, Helsinki, Finland

Terhi Kilpi

Affiliation Department of Vaccines and Immune Protection, National Institute for Health and Welfare, Helsinki, Finland

Arja Vuorela

Affiliation Department of Vaccines and Immune Protection, National Institute for Health and Welfare, Helsinki, Finland

Turkka Kirjavainen

Affiliation Department of Pediatrics, Children’s Hospital, Helsinki University Hospital, Helsinki, Finland

Outi Vaarala

Affiliation Department of Vaccines and Immune Protection, National Institute for Health and Welfare, Helsinki, Finland

Ilkka Julkunen

Affiliations Department of Infectious Disease Surveillance and Control, National Institute for Health and Welfare, Helsinki, Finland, Department of Virology, University of Turku, Turku, Finland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: IJ KM JT MS. Performed the experiments: KM. Analyzed the data: S-LH OS-H PO T. Kirjavainen CH MP. Contributed reagents/materials/analysis tools: JI HN RS T. Kilpi AV MP OV. Wrote the paper: KM OV IJ.