AUTHOR=Schoonheim Menno M. , Meijer Kim A. , Geurts Jeroen J. G. TITLE=Network Collapse and Cognitive Impairment in Multiple Sclerosis JOURNAL=Frontiers in Neurology VOLUME=6 YEAR=2015 URL=https://www.frontiersin.org/journals/neurology/articles/10.3389/fneur.2015.00082 DOI=10.3389/fneur.2015.00082 ISSN=1664-2295