NicoleBoffin Sciensano Belgium In programme October 24 17:30 to 17:45 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 17:30 Oral presentation General practice patients in treatment for substance use problems at different levels of care: an observational study using two data sources 17:30 to 17:45 Insights zone 3 (I3) Nicole Boffin