TY - JOUR A1 - van Lier, P.A.C. A1 - Muthén, B.O. A1 - van der Sar, R.M. A1 - Crijnen, A.A.M. T1 - Preventing Disruptive Behavior in Elementary Schoolchildren: Impact of a Universal Classroom-Based Intervention Y1 - 2004 DO - 10.1037/0022-006x.72.3.467 JF - Journal of Consulting and Clinical Psychology VL - 72 IS - 3 SP - 467 EP - -478 ER -