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Tremolizzo, L., Ferrarese, C. & Appollonio, I. A puzzling visual field defect and the missing knee. Neurol Sci 32, 989–990 (2011). https://doi.org/10.1007/s10072-011-0586-4
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DOI: https://doi.org/10.1007/s10072-011-0586-4