1. Centre for Oral Bioengineering, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, UK
2. Department of Preventive Dental Sciences, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
3. Department of Orthodontics, Dental School, Medical Faculty, University of Bern, Switzerland; Private practice, Corfu, Greece
4. Centre for Oral Immunobiology and Regenerative Medicine, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, UK