OTTAWA, Ontario, April 24 -- The Canadian Medical Association Journal published research articles on the following topics in its April 24, 2023 edition:

Research:

* Risks of leukemia, intracranial tumours and lymphomas in childhood and early adulthood after pediatric radiation exposure from computed tomography

Practice:

* Cases: Persistent myopericarditis after heterologous SARS-CoV-2 mRNA vaccination

The April 2023 edition of th . . .

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