[1] NINDS, Epilepsy Res Lab, NIH, Bethesda, MD 20892 USA
[2] NINDS, Mouse Imaging Facil, NIH, Bethesda, MD 20892 USA
[3] Oregon Hlth & Sci Univ, Clin Biochem Genet Lab, Portland, OR 97201 USA
[4] Childrens Natl Med Ctr, Dept Neurol, Washington, DC 20010 USA