1. School of Medicine, Dentistry and Biomedical Sciences Queen's University Belfast Belfast UK
2. Department of Preventive and Restorative Dentistry, College of Dental Medicine University of Sharjah Sharjah UAE
3. Division of Restorative Dentistry & Periodontology Dublin Dental University Hospital, Trinity College Dublin Dublin Ireland
4. Centre for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences Queen's University Belfast Belfast UK