Authors: Tarek A Yousry; Eugene O Major; Caroline Ryschkewitsch; Gary Fahle; Steven Fischer; Jean Hou; Blanche Curfman; Katherine Miszkiel; Nicole Mueller-Lenke; Esther Sanchez; Frederik Barkhof; Ernst-Wilhelm Radue; Hans R Jäger; David B Clifford Journal: N Engl J Med Date: 2006-03-02 Impact factor: 91.245