DOI: 10.1055/s-00000094

Zeitschrift für Gastroenterologie

References

Xuan J, Kirchdoerfer LJ, Boyer JG, Norwood GJ.
Effects of comorbidity on health-related quality-of-life-scores: An analysis of clinical trial data. 
Clin Ther 1999; 21: 383-403  

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