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. 2022 Dec 16;8:172. doi: 10.1038/s41531-022-00439-z

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© This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply 2022

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Fig. 3 — Visualization of unsupervised learning via GMM on two-dimensional progression space and identification of three Gaussian distributions representing three distinct PD subtypes. An increase in value along either direction reflects the increase in the disturbance on a normalized scale.