“They’re all struggling as well”: social and economic barriers and facilitators to self-managing chronic illness among marginalized people who use drugs oleh Lisa M. Boucher, Esther S. Shoemaker, Clare E. Liddy, Lynne Leonard, Paul A. MacPherson, Justin Presseau, Alana Martin, Dave Pineau, Christine Lalonde, Nic Diliso, Terry Lafleche, Michael Fitzgerald, Claire E. Kendall