1. Department of Orthodontics, Newcastle Dental Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
2. Department of Orthodontics, School of Dental Sciences, Newcastle University, Newcastle upon Tyne, UK
3. Newcastle Dental Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
4. Department of Paediatric Dentistry, School of Dental Sciences, Newcastle University, Newcastle upon Tyne, UK