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Am J Gastroenterol. 2017 Apr;112(4):654. doi: 10.1038/ajg.2017.30.

Negative is Positive.

Author information

1
Universidad de Leon - IBIOMED Campus de Vegazana, Leon 24071, Spain.
PMID:
28381860
DOI:
10.1038/ajg.2017.30

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