Challenges and opportunities in embedding core components of substance use health care into Housing First programs - Oluwaseyi Dolapo Somefun; Vicky Stergiopoulos; Sheena Taha; Nick Kerman; Leslie Buckley; Natalie Aubin; Alexander Caudarella; Stephanie Caroline Juhasz; Karly Muriel McCrone; Jodie Millward; Tomas Mirabelli; Kim Corace (Frontiers in Public Health, 2026)