Abstract
Moccia M, De Stefano N and Barkhof F. Imaging outcome measures for progressive multiple sclerosis trials. Mult Scler 2017; 23: 1614–1626. DOI: 10.1177/1352458517729456.
On pages 1614 and 1620 of this article, positron emission tomography was incorrectly spelled as position emission tomography.
SAGE and the authors apologise for any confusion.
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