METHODS :Observational retrospective open cohort study, using primary care electronic medical record data from the University of Toronto Practice-Based Research Network (UTOPIAN) database, from January 2019 to December 2020. Children under 2years old who had at least 2 visits recorded in UTOPIAN ...
We received ethics approval from the Health Sciences Research Ethics Board at the University of Toronto, Canada. 2.1.1. Study Site 1: Algoma Public Health, Ontario The study was performed in Algoma Public Health (APH), one of the 36 local public health units in Ontario, Canada. APH serves...