Zuluaga, C., M. V. Sierra, and E. Asprilla. “Causas De Ceguera Infantil En Cali, Colombia.”. Colombia Médica, Vol. 36, no. 4, 1, pp. 235-8, https://colombiamedica.univalle.edu.co/colombiamedica311/index.php/comedica/article/view/382.