G. J. Pagán, J. Oliva, L. Cuadrado, S. Rivas-Tumanyan, and A. R. Elías-Boneta, “Prevalence of Hypodontia in 10- to 14-Year-Olds Seeking Orthodontic Treatment at a Group of Clinics in Puerto Rico”, PRHSJ, vol. 33, no. 1, Feb. 2014.