1. Clinical lecturer, StR in Restorative Dentistry, Cardiff University School of Dentistry, Cardiff and Vale University Health Board, University Hospital of Wales, Cardiff, UK
2. Suzhou Science and Technology Town, Huqiu, Suzhou, Jiangsu, China
3. Chair in Cariology and Operative Dentistry, Honorary Consultant, Restorative Dentistry, Faculty of Dentistry, Oral and Craniofacial Sciences, King's College London, London, UK