From the Departments of Medicine (P.G.W., B.S.) and Medical Biosciences (S.N.-A., D.H.), Umeå University, Umeå, Sweden; the Department of Biostatistics (W.M.B., S.S.R.), Wake Forest University School of Medicine, Winston-Salem, NC; Department of Neurolog
Neurology | February 5, 2007 | Volume: 68 | Issue: 6 | Pages: 427-431