DOI:
10.1055/s-00000099
Zeitschrift für Orthopädie und Unfallchirurgie
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References
van Laerhoven H, van der Zaag-Loonen HJ, Derkx BHF.
A comparison of Likert scale and visual analogue scales as response options in children's questionnaires.
Acta Paediatr 2004; 93: 830-835
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