1. Mohammed bin Rashid University of Medicine and Health Sciences, Hamdan bin Mohammed College of Dental Medicine; Dubai United Arab Emirates
2. Sir John Walsh Research Institute, School of Dentistry, University of Otago; Dunedin New Zealand
3. RAK Dental Centre, Ministry of Health and Prevention; Ras Al-Khaimah United Arab Emirates
4. Private practice; Northland Prosthodontics Ltd, c/o NorthShore Oral and Maxillofacial Surgeons; Auckland New Zealand
5. Department of Periodontology; University Hospital Münster; Münster Germany
6. Cochrane Oral Health; Division of Dentistry, School of Medical Sciences, Faculty of Biology, Medicine and Health, The University of Manchester; Manchester UK