1. National Cancer Institute; Section of Pathology; Av. San Fernando No. 22 Col. Seccion XVI Mexico City Mexico 14080
2. Sanitas Foundation; Research Institute; Av Calle 127 #21-60 Cons 221 Bogotá Colombia
3. National Cancer Institute; Basic Research; Av. San Fernando No. 22 Col. Seccion XVI Mexico City Distrito Federal Mexico 14080
4. National Polytechnic Institute; Postgraduate Studies and Research; Mexico City D.F. Mexico
5. Tokio 204 Mexico City D.F. Mexico 03300
6. Instituto Nacional de Salud Pública; Department of Systematic Reviews; Calle 7, Fray Pedro de Gante número 50, Colonia Sección XVI No. 50 Delegación Tlalpan México Distrito Federal Mexico
7. National Cancer Institute; Av. San Fernando No. 22 Col. Seccion XVI Mexico City Mexico 14080