AndréTadeu Institute of Public Health of University of Porto (ISPUP) Porto Portugal In programme October 23 18:30 to 18:45 View hours & dates Hours & Dates Plenary session Poster session Big debate Structured session Workshop Oral presentation session Short communication session Poster guided tour Wednesday, 23 October 18:30 Oral presentation USODROGAS.PT: Portugal's drug use: a web based survey 18:30 to 18:45 Central square 1 (C1) André Tadeu