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Is it safe to run a marathon after heart surgery (valve replacement)?

Each week students in Professor Ian Shrier’s (@McGillU) Massive Open Online Course (MOOC) ask questions. One questions is answered by our world expert panel on the BJSM blog. This week’s question is from a MOOC student who used to run marathons. (not the person in the photo, left) Q: I used to be a marathon […]

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