DOI:
10.1055/s-00000133
Gastroenterologie up2date
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References
Garrigues V, Gálvez C, Ortiz V et al.
Prevalence of constipation: agreement among several criteria and evaluation of the diagnostic accuracy of qualifying symptoms and self-reported definition in a population-based survey in Spain.
Am J Epidemiol 2004;
159: 520-526
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