818: SERUM BIOMARKER RELATIONSHIPS WITH FUNCTIONAL IMPAIRMENT FOLLOWING ACUTE PEDIATRIC BRAIN INJURY. (January 2018) - Madurski, Catherine; Beers, Sue; Houtrow, Amy; Smith, Craig; Doughty, Lesley; Feldman, Keri; Richichi, Rudolph; Burns, Cheryl; Rubin, Pamela; Zhou, Amy; Benken, Laura; Krallman, Kelli; et al.