Journal Article
                        
                        Eusebio, Cristina, Hannah  Kuper, Sarah  Polack, John  Enconado, Noel  Tongson, Donald  Dionio, Anne  DumDum, Hans  Limburg, and Allen  Foster.  
"Rapid assessment of avoidable blindness in Negros Island and Antique District, Philippines." British Journal of Ophthalmology 91, no. 12 (2007): 1588-1592.