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APA Citation
Arden, G. B., Hamilton, A. M., Wilson-Holt, J., Ryan, S., Yudkin, J. S., & Kurtz, A. (1986). pattern electroretinograms become abnormal when background diabetic retinopathy deteriorates to a preproliferative stage: possible use as a screening test.. British journal of ophthalmology, 70(5), 330–335. http://access.bl.uk/ark:/81055/vdc_100137791087.0x000051