1. Department of Dermatology; Instituto Valenciano De Oncologia; Valencia Spain
2. Division of Molecular Genetic Epidemiology; German Cancer Research Center; Heidelberg Germany
3. Laboratory of Molecular Biology; Instituto Valenciano De Oncologia; Valencia Spain
4. Medical Oncology Department; Instituto Valenciano De Oncologia; Valencia Spain
5. Department of Pathology; Instituto Valenciano De Oncologia; Valencia Spain
6. Department of Dermatology; Hospital Arnau De Vilanova De Valencia; Valencia Spain
7. Department of Pathology; Hospital Arnau De Vilanova De Valencia; Valencia Spain
8. Center for Primary Health Care Research; Lund University; Malmö Sweden
9. Division of Epidemiology and Genetics; National Cancer Institute, US National Institutes of Health; Bethesda MD