1. Department of Oral MedicineSt John's Institute of DermatologyGuy's Hospital, Guy's and St Thomas’ NHS Foundation Trust London U.K
2. Department of Oral Medicine Birmingham Dental Hospital and School of Dentistry Birmingham U.K
3. Biostatistics and Research Methods CentreKing's College London Faculty of DentistryOral& Craniofacial Sciences London U.K
4. Centre for Oral Clinical and Translational SciencesKing's College London Faculty of DentistryOral& Craniofacial Sciences London U.K
5. Centre for Host–Microbiome Interactions King's College London Faculty of Dentistry Oral& Craniofacial Sciences London U.K
6. Department of Oral Medicine Eastman Dental Hospital UCLH/Eastman Dental Institute, UCL London U.K
7. Department of Oral Medicine Glasgow Dental Hospital and School Glasgow U.K
8. St John's Institute of Dermatology Guy's Hospital, Guy's and St Thomas’ NHS Foundation Trust London U.K