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. Author manuscript; available in PMC: 2017 Aug 1.
Published in final edited form as: J Neurol. 2016 May 18;263(8):1518–1529. doi: 10.1007/s00415-016-8158-4

Figure 1.

Figure 1

Schematic of primary outcome variables including center of mass (COM) and margin of stability, which is calculated using the extrapolated center of mass (XCOM). See text for further details.