About the Authors

Sirpa Arte

Affiliations Institute of Dentistry, University of Helsinki, Helsinki, Finland, Department of Oral and Maxillofacial Diseases, Helsinki University Central Hospital, Helsinki, Finland

Satu Parmanen

Affiliation Institute of Dentistry, University of Helsinki, Helsinki, Finland

Sinikka Pirinen

Affiliation Institute of Dentistry, University of Helsinki, Helsinki, Finland

Satu Alaluusua

Affiliations Institute of Dentistry, University of Helsinki, Helsinki, Finland, Department of Oral and Maxillofacial Diseases, Helsinki University Central Hospital, Helsinki, Finland

Pekka Nieminen

pekka.nieminen@helsinki.fi

Affiliation Institute of Dentistry, University of Helsinki, Helsinki, Finland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: S. Arte S. Parmanen PN. Performed the experiments: S. Arte S. Parmanen PN. Analyzed the data: S. Arte S. Paarmanen PN. Contributed reagents/materials/analysis tools: S. Arte PN. Wrote the manuscript: S. Arte S. Parmanen PN. Examination of the patients: S. Arte S. Pirinen S. Alaluusua.