1. School of Dentistry University of Granada Granada Spain
2. Biohealth Research Institute (IBS) Granada Spain
3. Oral Medicine Department King's College London London UK
4. WHO Collaborating Centre for Oral Cancer London UK
5. Dermatology Service Ciudad Real General University Hospital Ciudad Real Spain
6. Dermatology Service San Cecilio Hospital Complex Granada Spain
7. Pathology Service San Cecilio Hospital Complex Granada Spain