Convergent construct validity and test-retest reliability of both German versions of the original and the revised Niigata PPPD Questionnaire: NPQ and NPQ-R by Sarah Chételat, Sarah Chételat, Eve-Yaël Gerber, Eve-Yaël Gerber, Sarah El Khadlaoui, Frank Behrendt, Frank Behrendt, Michaela Stark, Michaela Stark, Stefan Schädler, Stefan Schädler, Maximilian Maywald, Lena Fabritius, Johannes Gerb, Johannes Gerb, Denis Grabova, Wiebke Trost, Andreas Zwergal, Andreas Zwergal, Ralf Strobl, Ralf Strobl, Katrin Parmar, Katrin Parmar, Hans Ulrich Gerth, Hans Ulrich Gerth, Leo H. Bonati, Leo H. Bonati, Leo H. Bonati, Sandra Becker-Bense, Corina Schuster-Amft, Corina Schuster-Amft, Corina Schuster-Amft

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