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APA Citation
Atkinson, J., Braddick, O. J., Durden, K., Watson, P. G., & Atkinson, S. (1984). screening for refractive errors in 6-9 month old infants by photorefraction.. British journal of ophthalmology, 68(2), 105–112. http://access.bl.uk/ark:/81055/vdc_100135572908.0x00004b