V. Pastrana-González, O. E. Ospina, H. Restrepo Osorio, and A. E. Valderrama Aguirre, “Pilot evaluation of an HNIR audiometric classification scale, applicable to epidemiological surveillance programs”, Rev Colomb Salud Ocup, vol. 3, no. 4, pp. 12–15, Dec. 2013, Accessed: Dec. 06, 2025. [Online]. Available: https://revistas.unilibre.edu.co/index.php/rc_salud_ocupa/article/view/4873