DOI:
10.1055/s-00000094
Zeitschrift für Gastroenterologie
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References
Schipper H, Clinch JJ, Olweny CHLM.
Quality of life studies: definitions and conceptual issues.
In: Spilker B. ed
Quality of Life and Pharmacoeconomics in Clinical Trials.
Philadelphia: Lippincott-Raven; 1996: 11-24
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