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APA Citation
Rono, H. K., Bastawrous, A., Macleod, D., Wanjala, E., Di Tanna, G. L., Weiss, H. A., & Burton, M. J. (2018). smartphone-based screening for visual impairment in Kenyan school children: a cluster randomised controlled trial. Lancet, 6(8), e924–e932. http://access.bl.uk/ark:/81055/vdc_100084033813.0x000001