DOI: 10.1055/s-00000094

Zeitschrift für Gastroenterologie

References

Drossman DA, Li Z, Andruzzi E. et al.
U.S.householder survey of functional gastrointestinal disorders. Prevalence, sociodemography and health impact. 
Dig Dis Sci 1993; 38: 1569-1580  

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