Wah, W., Earnest, A., Sabanayagam, C., Cheng, C., Ong, M. E. H., Wong, T. Y., & Lamoureux, E. L. (2015). Composite Measures of Individual and Area-Level Socio-Economic Status Are Associated with Visual Impairment in Singapore. PLoS One.

Wah, Win, Arul Earnest, Charumathi Sabanayagam, Ching-Yu Cheng, Marcus Eng Hock Ong, Tien Y. Wong, i Ecosse L. Lamoureux. "Composite Measures of Individual and Area-Level Socio-Economic Status Are Associated With Visual Impairment in Singapore." PLoS One 2015.

Wah, Win, et al. "Composite Measures of Individual and Area-Level Socio-Economic Status Are Associated With Visual Impairment in Singapore." PLoS One 2015.