1. Division of Genome Modifications and Carcinogenesis, Infections and Cancer Program; German Cancer Research Center; Heidelberg Germany
2. Unit of Infections and Cancer, Cancer Epidemiology Research Program, IDIBELL, Catalan Institute of Oncology; L'Hospitalet de Llobregat; Barcelona Spain
3. CIBER Epidemiología y Salud Pública (CIBERESP); Barcelona Spain
4. Hospital del Mar; Parc de Salut Mar Barcelona Spain
5. General Hospital d'Hospitalet; L'Hospitalet de Llobregat; Spain
6. Molecular Biology Laboratory, Department of Otolaryngology, Head and Neck Surgery; Heidelberg University; Heidelberg Germany
7. DDL Diagnostic Laboratory; Rijswijk The Netherlands
8. Hamamatsu Tissue Imaging and Analysis Center (TIGA); BIOQUANT; Heidelberg Germany
9. Department of Medical Oncology, National Center for Tumor Diseases; University Hospital Heidelberg; Germany
10. Institute of Pathology; University Hospital Heidelberg; Heidelberg Germany
11. Department of Botany and Microbiology (Honorary Member); King Saud University; Riyadh Saudi Arabia