July 2012 - Volume 23 - Issue 4
pp: 509-652
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Effect of Physical Activity on Functional Performance and Knee Pain in Patients With Osteoarthritis : Analysis With Marginal Structural Models

Mansournia, Mohammad Ali; Danaei, Goodarz; Forouzanfar, Mohammad Hossein; More

Epidemiology . 23(4):631-640, July 2012.