"It wasn't here, and now it is. It's everywhere": fentanyl's rising presence in Oregon's drug supply. - Shin, Sarah S.; LaForge, Kate; Stack, Erin; Pope, Justine; Leichtling, Gillian; Larsen, Jessica E.; Leahy, Judith M.; Seaman, Andrew; Hoover, Daniel; Chisholm, Laura; Blazes, Christopher; Baker, Robin; et al. (Harm Reduction Journal, 2022)