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APA Citation
Alcalde, M., Lopez-Bernal, I., Galvan, A., Pecellin, I., Narvaez, I., & Herrera, J. M. (1998). blurred vision during exacerbation of ulcerative colitis.. Postgraduate medical journal, 74(875), 551–552. http://access.bl.uk/ark:/81055/vdc_100135140741.0x00002a