Tobias S, Angelucci J, Wood E, Buxton JA, Ti L Novel adulterants in unregulated opioids and their associations with adverse events Can J Public Health PubMed

Tobias S, Buxton J, Ti L Local impact from international crises: unregulated drug toxicity during the COVID-19 pandemic in British Columbia, Canada Am J Public Health PubMed

Kennedy MC, Tobias S, Dong H, Buxton JA, Lysyshyn M, Tupper KW, Ti L Author reply to letter to the editor in response to "Fentanyl concentration in drug checking samples and risk of overdose death in Vancouver, Canada" Am J Prev Med PubMed

Kennedy MC, Dong H, Tobias S, Buxton J, Lysyshyn M, Tupper K, Ti L Fentanyl concentration in drug checking samples and risk of overdose death in Vancouver, Canada Am J Prev Med PubMed

Tobias S, Ferguson M, Palis H, Burmeister C, McDougall J, Liu L, Graham B, Ti L, Buxton JA Motivators of and barriers to drug checking engagement in British Columbia, Canada: findings from a cross-sectional study Int J Drug Policy PubMed

Bhuiyan I, Tobias S, Ti L Responding to changes in the unregulated drug supply: the need for a dynamic approach to drug checking technologies Am J Drug Alcohol Abuse PubMed

Ti L, Grant CJ, Tobias S, Hore DK, Laing R, Marshall BDL Development of a neural network model to predict the presence of fentanyl in community drug samples PLoS One PubMed

Crepeault H, Socías ME, Tobias S, Lysyshyn M, Custance A, Shapiro A, Ti L Examining fentanyl and its analogues in the unregulated drug supply of British Columbia, Canada using drug checking technologies Drug Alcohol Rev PubMed

Tobias S, Grant CJ, Laing R, Lysyshyn M, Buxton JA, Tupper KW, Wood E, Ti L What impact did the COVID-19 pandemic have on the variability of fentanyl concentrations in the Vancouver, Canada illicit drug supply? An interrupted time-series analysis BMJ Public Health Link