[1] Seattle Childrens Res Inst, Ctr Child Hlth, Behav & Dev, CURE-03,1920 Terry Ave,POB 5371, Seattle, WA 98145 USA
[2] Univ Washington, Dept Pediat, Seattle, WA 98195 USA
[3] Oregon Hlth & Sci Univ, Sch Med, Portland, OR USA
[4] Georgia Southern Univ, Dept Hlth Sci & Kinesiol, Statesboro, GA USA
[5] Northwestern Univ, Sch Med, Evanston, IL USA
[6] Univ Oregon, Ctr Brain Injury Res & Training, Eugene, OR USA
[7] Senturia & Rabkin Consulting, Seattle, WA USA