1. Instituto Nacional de Estadística. (National Statistics Institute). Available: http://www.ine.es/jaxi/tabla.do?path=/t15/p417/a2012/l0/&file=01001.px&type=pcaxis&L=0. Accessed 29 Sep 2014.
2. International Classification of Childhood Cancer, third edition;E Steliarova-Foucher;Cancer,2005
3. Geographical patterns of childhood cancer incidence in Europe, 1988–1997. Report from the Automated Childhood Cancer Information System project;CA Stiller;Eur J Cancer Oxf Engl 1990,2006
4. Estadísticas 1980–2012;R Peris-Bonet,2013
5. Prenatal epidemiology of pediatric tumors;JA Ross;Curr Oncol Rep,2000