Differential Item Functioning between English, German, and Spanish PROMIS® Physical Function Ceiling Items
- Constantin Yves Plessen
- , Felix Fischer
- , Claudia Hartmann
- , Gregor Liegl
- , Benjamin D. Schalet
- , Aaron J Kaat
- , Rodrigo Pesantez
- , Alexander Joeris
- , Marilyn Heng
- , Matthias Rose
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