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Hypoperfusion of brain parenchyma is associated with the severity of chronic cerebrospinal venous insufficiency in patients with multiple sclerosis: a cross-sectional preliminary report

Paolo Zamboni*, Erica Menegatti, Bianca Weinstock-Guttman, Michael G Dwyer, Claudiu V Schirda, Anna M Malagoni, David Hojnacki, Cheryl Kennedy, Ellen Carl, Niels Bergsland, Christopher Magnano, Ilaria Bartolomei, Fabrizio Salvi and Robert Zivadinov

BMC Medicine 2011, 9:22  doi:10.1186/1741-7015-9-22