The “zig-zag” sign in Progressive Supranuclear Palsy – the slowness of vertical saccades was the clue
2002 ◽
Vol 956
(1)
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pp. 434-437
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2011 ◽
Vol 1233
(1)
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pp. 64-70
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1996 ◽
Vol 34
(6)
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pp. 711