1. Division of Regenerative Dental Medicine and Periodontology, University Clinics of Dental Medicine University of Geneva Geneva Switzerland
2. Intensive Care Unit, Department of Acute Medicine University Hospitals of Geneva Geneva Switzerland
3. Department of Periodontology, Faculty of Odontology Malmo University Malmo Sweden
4. Division of Conservative Dentistry and Periodontology University Clinic of Dentistry, Medical University of Vienna Vienna Austria