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. 2013 Dec 27;8(12):e84716. doi: 10.1371/journal.pone.0084716

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© 2013 Gibbons et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Abnormal results are displayed within the lightly shaded region. The 9 individuals that meet criteria for neuropathic POTS (abnormal skin biopsy and 1 other abnormal test) are in the darkly shaded region. A total of 9 subjects had abnormal intra-epidermal nerve fiber density (skin biopsy). A total of 12 individuals had abnormal quantitative sensory testing (QST). A total of 8 individuals had abnormal sudomotor (QDIRT) testing. * = individuals with neuropathic POTS, ^† = individuals with cholinergic POTS.