Friendship and Delinquency: Selection and Influence Processes in Early Adolescence by Knecht, A, Snijders, T, Baerveldt, C, Steglich, C, Raub, W

Aerobic fitness is associated with greater hippocampal cerebral blood flow in children by Chaddock-Heyman, L, Erickson, K, Chappell, M, Johnson, C, Keinzler, C, Knecht, A, Drollette, E, Raine, L, Scudder, M, Kao, S, Hillman, C, Kramer, A