Affiliation: | 1.Department of Oral and Maxillofacial Diseases,University of Helsinki and Helsinki University Hospital,Helsinki,Finland;2.University of Helsinki,Helsinki,Finland;3.Division of Periodontology, Department of Dental Medicine,Karolinska Institutet,Huddinge,Sweden;4.Sk?ne University,Lund,Sweden;5.Department of Paediatrics, Division of Paediatric Cardiology,Sk?ne University Hospital,Lund,Sweden |