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Chronic cerebrospinal venous insufficiency is not associated with cognitive impairment in multiple sclerosis

Ralph HB Benedict*, Bianca Weinstock-Guttmam, Karen Marr, Vesela Valnarov, Cheryl Kennedy, Ellen Carl, Christina Brooks, David Hojnacki and Robert Zivadinov

BMC Medicine 2013, 11:167  doi:10.1186/1741-7015-11-167

Pre-publication versions of this article and reviewers' reports

Original Submission - Version 1 27 Feb 2013
Reviewer's Report William Sheremata 25 Apr 2013
Reviewer's Report Basil Sharrack 20 May 2013
Resubmission - Version 2 Author's comment 25 May 2013
Editorial acceptance 17 Jun 2013
Published 18 Jul 2013