W. A. Arboleda Ruiz, D. P. Betancurth Loaiza, and L. Ángela Correa Ramírez, “Mammogram frequency and clinical breast exam in women under the subsidized health regime- Manizales (Caldas)”, Hacia Promoc. Salud, vol. 17, no. 2, pp. 125–135, Jul. 2012.