JonathanCaulkins Carnegie Mellon University United States In programme October 24 15:25 to 15:40 October 24 18:40 to 18:55 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 15:25 Oral presentation Changes in cannabis products during legal sales in Washington State 15:25 to 15:40 Main stage Jonathan Caulkins 18:40 Oral presentation Modelling the effects and potentials of fentanyl and linked drug policy responses 18:40 to 18:55 Futures zone 1 (F1) Jonathan Caulkins