“The Visual and Refractive Status in One Sample Population of ‘Orang Asli’(Indigenous) Children in Hulu Langat, Selangor”. Bangladesh Journal of Medical Science 19, no. 4 (April 12, 2020): 609–613. Accessed July 3, 2026. https://www.banglajol.info/index.php/BJMS/article/view/46614.