The Ontario Integrated Supervised Injection Services Cohort Study of People Who Inject Drugs in Toronto, Canada (OiSIS-Toronto): Cohort Profile. - Scheim, Ayden I.; Sniderman, Ruby; Wang, Ri; Bouck, Zachary; McLean, Elizabeth; Mason, Kate; Bardwell, Geoff; Mitra, Sanjana; Greenwald, Zoë R.; Thavorn, Kednapa; Garber, Gary; Baral, Stefan D.; et al. (Journal of Urban Health, 2021)