1. Section of Oral Health and Periodontology Division of Oral Diseases Department of Dental Medicine, Karolinska Institutet Huddinge Sweden
2. University of Helsinki Helsinki University Central Hospital Department of Oral and Maxillofacial Diseases Helsinki Finland
3. Cardiology Unit Department of Medicine Karolinska Institutet Karolinska University Hospital Solna Stockholm Sweden
4. Capio Saint Göran's Hospital Stockholm Sweden