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Psychometric properties of the Physical Activity Scale for the Elderly | COPD - Dove Medical Press https://t.co/N1yb9scsS6 https://t.co/AoCjkA2YN0
Psychometric properties of the Physical Activity Scale for the Elderly | COPD - Dove Medical Press https://t.co/N1yb9scsS6 https://t.co/AoCjkA2YN0