Marshall, E.G. et al. 2022. The impact of not having a primary care provider on emergency department utilization and hospitalizations before and during COVID-19: A novel retrospective cohort study linking primary care waitlists with administrative billing data. International Journal of Population Data Science. 7, 3 (Aug. 2022). DOI:https://doi.org/10.23889/ijpds.v7i3.1932.