Blanco, W. M. R. “Clinical and Survival of Retinoblastoma Patients Treated at the National Institute of Neoplastic Diseases January 2001 - August 2007”. ACTA MEDICA PERUANA, Vol. 30, no. 4, Dec. 2013, pp. 69-73, http://54.39.98.165/index.php/AMP/article/view/1311.