MarleenOlthof Trimbos Institute Netherlands In programme October 24 13:50 to 14:00 View hours & dates Hours & Dates Plenary session Poster session Big debate Structured session Workshop Oral presentation session Short communication session Poster guided tour Thursday, 24 October 13:50 Short communication Intention to reduce cannabis use and help-seeking attitudes in Dutch frequent cannabis users. 13:50 to 14:00 Networking zone 4 (N4) Marleen Olthof