B. S. Ramírez-Puerta, Ángela M. Franco-Cortés, Ángela M. Gómez-Restrepo, and D. I. Corrales-Mesa, “Dental fluorosis in children of private schools. Medellín, Colombia, 2007”, Rev Fac Odontol Univ Antioq, vol. 21, no. 2, pp. 170–176, Jun. 2010.