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. 1991 May 25;302(6787):1276–1277. doi: 10.1136/bmj.302.6787.1276-c

What is a normal upper gastrointestinal tract?

A P Walker, B F Walker, I Segal

PMCID: PMC1669951 PMID: 2043868

1276

Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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