About the Authors

Annsofi Johannsen

Affiliation Department of Dental Medicine, Division of Periodontology, Karolinska Institutet, Huddinge, Sweden

Michael C. Fored

Affiliation Department of Medicine Solna, Clinical Epidemiology Unit T2, Karolinska Institutet, Stockholm, Sweden

Jan Håkansson

Affiliation Department of Periodontology, Institute of Odontology, The Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden

Anders Ekbom

Affiliation Department of Medicine Solna, Clinical Epidemiology Unit T2, Karolinska Institutet, Stockholm, Sweden

Anders Gustafsson

Anders.Gustafsson@ki.se

Affiliation Department of Medicine Solna, Clinical Epidemiology Unit T2, Karolinska Institutet, Stockholm, Sweden

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AJ JH AE AG. Performed the experiments: AJ MF AG. Analyzed the data: AJ MF AG. Contributed reagents/materials/analysis tools: MF JH AE AG. Wrote the paper: AJ MF JH AE AG.