Daysi-Yoe-Ling Chang is in Medicine and Surgery from UNAN-LEON, Nicaragua. Diploma in Advanced Studies in the Doctoral Program in Public Health, Quality of Life, and Social Well-being at the University of Malaga. Master in Public Health and Sanitary Management from the EASP-University of Granada. Master in Public Health and Epidemiology from CIES-UNAN-MANAGUA. He is currently carrying out the doctoral program in "Health Sciences" at the University of Seville with the thesis "Burden attributable to lymphohematopoietic neoplasms in the province of Granada in the period 2000-2012".