Lectura Tesi Doctoral Survival analysis of lymphoid neoplasms and impact of comorbidity in patients with chronic lymphocytic leukemia in Girona: a population-based study Elaborada per: Sra. Alícia Villavicencio Obando Direcció: Dr. Marc Saez Zafra, Dr. Rafael Marcos Gragera i Dra. Marta Solans Margalef