University of Toronto - Faculty of Medicine, University of Toronto - Faculty of Medicine, Childhood Acute Illness and Nutrition Network, University of Toronto - Centre for Global Child Health, University of Toronto, University of Toronto, University of Toronto - Unity Health Toronto, Federal University of Pelotas (UFPel), University of São Paulo (USP) - Departamento de Medicina Preventiva, Childhood Acute Illness and Nutrition Network and University of Toronto - Faculty of Medicine