About the Authors

Aino Rantala

Affiliation Center for Environmental and Respiratory Health Research, Institute of Health Sciences, University of Oulu, Oulu, Finland

Jouni J. K. Jaakkola

jouni.jaakkola@oulu.fi

Affiliation Center for Environmental and Respiratory Health Research, Institute of Health Sciences, University of Oulu, Oulu, Finland

Maritta S. Jaakkola

Affiliation Respiratory Medicine Unit, Center for Environmental and Respiratory Health Research, Institute of Clinical Medicine, University of Oulu and Oulu University Hospital, Oulu, Finland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AR JJ MJ. Performed the experiments: AR JJ MJ. Analyzed the data: AR JJ. Wrote the paper: AR JJ MJ.