[1] Seattle Childrens Hosp, Dept Neurol, 4800 Sand Point Way NE,POB 5371, Seattle, WA 98145 USA
[2] Boston Childrens Hosp, Dept Neurol, Boston, MA USA
[3] Boston Childrens Hosp, Dept Psychiat, Boston, MA USA
[4] Boston Childrens Hosp, Dept Radiol, Boston, MA USA
[5] Cleveland Clin, Dept Neurol, Cleveland, OH 44106 USA
[6] Childrens Hosp Colorado, Dept Neurol, Aurora, CO USA
[7] Childrens Med Ctr Dallas, Dept Neurol, Dallas, TX USA
[8] Hosp Sick Children, Dept Neurol, 555 Univ Ave, Toronto, ON M5G 1X8, Canada