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Yang, H.K., Kim, J.H. & Hwang, JM. Absent trochlear and abducens nerves in a patient with congenital fibrosis of extraocular muscles. Neurol Sci 41, 977–979 (2020). https://doi.org/10.1007/s10072-019-04104-x
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DOI: https://doi.org/10.1007/s10072-019-04104-x