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. 2022 Feb 17;13:793937. doi: 10.3389/fneur.2022.793937

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Copyright © 2022 Järvilehto, Harjuhaahto, Palu, Auranen, Kvist, Zetterberg, Koskivuori, Lehtonen, Saukkonen, Jokela, Ylikallio and Tyynismaa.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Serum neurofilament light is not elevated in SMAJ. Comparison of serum concentrations of NfL and GFAP between patients with SMAJ (n = 49) and controls (n = 45). The median per group is indicated by a bar. **p < 0.01, Mann–Whitney U-test.