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  ______    ______    _____      ___      _____   
 /_   _//  /_   _//  / ____||   / _ \\   / ____|| 
 `-| |,-    -| ||-  / //---`'  / //\ \\ / //---`' 
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   `-`'    `-----`    `----`  `-`   `-`   `----`

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Text this: Discordance between self-reported and performance-based physical function in patients who have knee osteoarthritis: associations with pain intensity and negative affect