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APA Citation
Sanchez-Dalmau, B., Goñi, F. J., Guarro, M., Roig, C., & Duch-Bordas, F. (1991). bilateral homonymous visual field defects as initial manifestation of multiple sclerosis.. British journal of ophthalmology, 75(3), 185–187. http://access.bl.uk/ark:/81055/vdc_100144720362.0x000047