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Risk of Severe Knee and Hip Osteoarthritis in Relation to Level of Physical Exercise: A Prospective Cohort Study of Long-Distance Skiers in Sweden
- Karl Michaëlsson,
- Liisa Byberg,
- Anders Ahlbom,
- Håkan Melhus,
- Bahman Y. Farahmand

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- Published: March 30, 2011
- https://doi.org/10.1371/journal.pone.0018339