1. Department of Dermatology; Hospital Universitario de Salamanca; Paseo de San Vicente Salamanca Spain
2. Institute of Biomedical Medicine of Salamanca (IBSAL); Hospital Universitario de Salamanca; Paseo de San Vicente Salamanca Spain
3. Department of Statistics; Facultad de Medicina; Universidad de Salamanca; Campus Miguel de Unamuno Salamanca Spain
4. Department of Dermatology; Hospital Virgen de la Concha; Avenida de Requejo; Zamora Spain
5. Institute of Molecular and Cellular Cancer Biology (IBMCC); Centro de investigación del Cáncer (CIC); Instituto Mixto Universidad de Salamanca/CSIC; Campus Miguel de Unamuno Salamanca Spain