[1] Harvard Univ, Sch Med, Harvard Mit Div Hlth Sci & Technol, Childrens Hosp Informat Program, Boston, MA 02115 USA
[2] Brigham & Womens Hosp, Ctr Neurol Dis, Cambridge, MA 02139 USA
[3] NuGEN Technol Inc, Unit A, San Carlos, CA 94070 USA
[4] Univ Massachusetts, Dept Phys, Boston, MA 02125 USA