1. Ocular Oncology Unit Service of Ophthalmology, Complexo Hospitalario Universitario de Santiago, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
2. Medical Oncology Department, Catalan Institute of Oncology, Barcelona, Spain
3. Department of Statistics and Operational Research, University of Vigo, Vigo, Spain
4. Grupo Obesidómica, Instituto de Investigación Sanitaria de Santiago (IDIS), Complexo Hospitalario Universitario de Santiago, Santiago de Compostela, Spain