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1: Gastrointest Endosc. 2005 Jun;61(7):809-11.Click here to read Links
Comment on:
Gastrointest Endosc. 2005 Jun;61(7):804-8.

Dysphagia drives doctors to diagnose a disease: pitfalls in interpreting observational studies.

PMID: 15933680 [PubMed - indexed for MEDLINE]