1. Department of Dentistry, King Fahad General Hospital, Jeddah, Saudi Arabia
2. Division of Periodontology, Department of Dental Medicine, Karolinska Institutet, Huddinge, Sweden
3. Folktandvården Stockholms län AB, Folktandvården Tumba, Sweden
4. Division of Oral Diagnostics and Oral Rehabilitation, Department of Dental Medicine, Karolinska Institutet, Huddinge, Sweden
5. Medical Unit for Reconstructive Plastic- and Craniofacial Surgery, Karolinska University Hospital, Stockholm, Sweden
6. Department of Dental Medicine, Division of Periodontology, Karolinska Institutet, Huddinge, Sweden