DOI:
10.1055/s-00000094
Zeitschrift für Gastroenterologie
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References
Sprangers MAG, Cull A, Bjordal K, Groenvold M, Aaronson NK.
The European Organization for Research and Treatment of Cancer approach to quality of life assessment: guidelines for developing questionnaires modules.
Qual Life Res 1993; 2: 287-295
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