1. School of Dental Medicine University of Zagreb Zagreb Croatia
2. School of Medicine and Dentistry University Santiago de Compostela Santiago Spain
3. CESPU University Gandra Portugal
4. University of Bordeaux Bordeaux France
5. Università Degli Studi di Milano Milan Italy
6. University of Manchester Manchester UK
7. Department of Oral Medicine, Guy's & St Thomas' NHS Foundation Trust (GSTT) Guy's Hospital London UK
8. St Helens & Knowsley Teaching Hospitals NHS Trust Manchester UK
9. Oral Medicine, Faculty of Dentistry, Oral & Craniofacial Sciences King's College London London UK