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Comment on “Associations between excessive supragastric belching and esophageal reflux factors in patients with PPI-refractory GERD in Japan”: methodological considerations regarding causality, subtyping, and measurement

Crossref DOI link: https://doi.org/10.1007/s00535-026-02371-y

Published Online: 2026-02-25

Published Print: 2026-05

Update policy: https://doi.org/10.1007/springer_crossmark_policy

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