Improving Accessibility to Radiotherapy Services in Cali, Colombia : Cross-Sectional Equity Analyses Using Open Data and Big Data Travel Times from 2020 - Cuervo, L.G (Universitat Autònoma de Barcelona. Departament de Pediatria, Obstetrícia i Ginecologia i Medicina Preventiva i Salut Pública) ; Villamizar, Carmen Juliana (Johns Hopkins Bloomberg School of Public Health, Wolfe Street Building, Baltimore, USA) ; Cuervo, Daniel (IQuartil SAS, Colombia) ; Zapata Murillo, Pablo (IQuartil SAS, Colombia) ; Ospina, Maria B. (Queen's University, Kingston (ON), Canada) ; Valencia, Sara Marcela (Universidad Nacional de Colombia) ; Polo, Alfredo (Technical Cooperation and Capacity Development, Madrid) ; Suárez, Ángela (Johns Hopkins Bloomberg School of Public Health, Wolfe Street Building, Baltimore, USA) ; Bula, Maria (Independent researcher, Bogotá, Colombia) ; Miranda, Jaime (University of Sydney, Austràlia) ; Millán, Gynna (Universidad del Valle (Cali, Colòmbia)) ; Cuervo, Diana Elizabeth (Junta Nacional de Calificación de Invalidez [National Disability Board of Colombia) ; Owens, Nancy J. (Independent content and communications consultant, Fairfax, USA) ; Piquero Villegas, Felipe (Patient advocate and author of an autopathography, Bogotá, Colombia) ; Hatcher-Roberts, Janet (University of Ottawa, Ottawa, Canada) ; Paredes, Gabriel Dario (Independent consultant on emergency medicine and humanitarian response, Bogotá, Colombia) ; Navarro, Maria Fernanda (Regional Director, City Cancer Challenge Foundation, Bogotá, Colombia) ; Minotta, Ingrid Liliana (ProPacífico, Cali, Colombia) ; Palta, Carmen (ProPacífico, Cali, Colombia) ; Martínez Herrera, Eliana (Universidad de Antioquia) ; Jaramillo, Ciro (Universidad del Valle (Cali, Colòmbia))