Correspondence to Dr A Hirschmüller, Department of Orthopedics and Trauma Surgery, Medical Center—University of Freiburg, Center for Surgery, Hugstetter Str. 55, Freiburg im Breisgau D-79106, Germany; ...
Background Validation of instruments used to measure physical activity patterns is essential when attempting to assess the effectiveness of physical activity interventions. Objectives To assess the ...
Introduction: The COPD Assessment Test (CAT) is a standardized patient–completed tool dedicated to assessment of symptom severity. While the Polish CAT version has been used for a few years, it has ...
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