1. PAHO.WHO 2001. Cancer Prevention. A Brief Snapshot of the Situation: Cervical Cancer in Latin America and the Caribbean, 2001. http://www.paho.org/English/HCP/HCN/CCBriefSnapshot.htm (accessed June 2008).
2. OPS. 2002. Cáncer del cuello del útero: creciente amenaza en las Américas. http://www.paho.org/Spanish/DPI/100/100feature06.htm (accessed June 2008).
3. Decreasing cervical cancer mortality in Mexico: effect of Papanicolaou coverage, birthrate, and the importance of diagnostic validity of cytology;Lazcano-Ponce;Cancer Epidemiol Biomarkers Prev,2008
4. Regional differences in breast and cervical cancer mortality in Mexico between 1979-2006;Palacio-Mejía;Salud Publica Mex,2009
5. SSA. Programa de Acción: Cáncer Cérvico-Uterino. Primera Edición; 2002.