1 Department of Dermatology, Bellvitge University Hospital, L'Hospitalet de Llobregat, Barcelona, Spain; Department of Dermatology, Hospital Clínic of Barcelona, Barcelona, Spain.
2 Department of Odontostomatology, Odontological University Hospital of Barcelona, L'Hospitalet de Llobregat, Barcelona, Spain.
3 Department Oral and Maxillofacial Surgery, Bellvitge University Hospital, L'Hospitalet de Llobregat, Barcelona, Spain.
4 Cancer Epidemiology Research Program, Catalan Institute of Oncology (ICO), L'Hospitalet de Llobregat, Barcelona, Spain; Epidemiology, Public Health, Cancer Prevention and Palliative Care Program, IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain; Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III, Madrid, Spain.
5 Cancer Epidemiology Research Program, Catalan Institute of Oncology (ICO), L'Hospitalet de Llobregat, Barcelona, Spain; Epidemiology, Public Health, Cancer Prevention and Palliative Care Program, IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain.
6 Department of Pathology, Bellvitge University Hospital, L'Hospitalet de Llobregat, Barcelona, Spain.
7 Department of Medical Oncology, Catalan Institute of Oncology (ICO), L'Hospitalet de Llobregat, Barcelona, Spain; Program of Molecular Mechanisms and Experimental Therapy in Oncology, IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain.
8 Department of Dermatology, Bellvitge University Hospital, L'Hospitalet de Llobregat, Barcelona, Spain.