[1] Oregon Hlth & Sci Univ, MD PhD Program, 3181 SW Sam Jackson Pk Rd, Portland, OR 97239 USA
[2] Oregon Hlth & Sci Univ, Dept Neurol, 3181 SW Sam Jackson Pk Rd, Portland, OR 97239 USA
[3] Oregon Hlth & Sci Univ, Pape Family Pediat Res Inst, 3181 SW Sam Jackson Pk Rd,L 481, Portland, OR 97239 USA