First results of the French OCTOPUS survey among festival attendees: a latent class analysis Posted on May 4, 2023 By sdargoltz Marion Istvan, Vincent Bresdin, Marie Mainguy, Pauline Laigo, Marie Grall-Bronnec, Vincent Eudeline, Jean-Emmanuel Guillet, Manon Guillo, Laurent Babonnaud, Pascale Jolliet, Benoit Schreck & Caroline Victorri-Vigneau Harm Reduct J; 20:43; 2023 Access article Cannabis and Cannabinoids, Chemistry, Crime Scene Investigation and Reconstruction, DREs / Traffic Safety Resource Prosecutors, Forensic Pathology and Medicolegal Death Investigation, Seized Drugs/Controlled Substances, Toxicology