Eefje Vercoulen Trimbos Institute Utretch, Netherlands In programme November 23 16:50 to 18:20 View hours & dates Hours & Dates Wednesday, 23 November 16:50 Oral presentation Sustaining non-use of party drugs among Dutch young adults 16:50 to 18:20 Insights zone 2 (I2) Eefje Vercoulen