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. 2020 Jan 30;39(6):1765–1774. doi: 10.1007/s10067-019-04923-5

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© The Author(s) 2020

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Fig. 1 — Representative integrated spectra in the right frontal and parietal lobes from a participant in the RA group (top panels) and control group (bottom panels). X axis = parts per million. Y axis = institutional units.