title: Sudden, unexpected death in infancy in Ontario. I. Methodology and findings related to the host.
mesh_terms: D000367:Age Factors; D003645:Death, Sudden; D004812:Epidemiologic Methods; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000453:epidemiology*; D009864:Ontario; D012959:Socioeconomic Factors