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MR Venography of Multiple Sclerosis
I Leng Tan, Ronald A. van Schijndel, Petra J. W. Pouwels, Marianne A. A. van Walderveen, Juergen R. Reichenbach, Radu A. Manoliu and Frederik Barkhof
American Journal of Neuroradiology June 2000, 21 (6) 1039-1042;