---
title: "PMID 33478389 → PMCID PMC7819306 & DOI | Scholar Sidekick"
description: "PMID 33478389 maps to PMCID PMC7819306 and DOI 10.1186/s12199-021-00933-5. No retraction found. A free, legal copy is available. Checked 2026-08-13."
doc_version: "1.0"
last_updated: "2026-08-13"
---

# PMID 33478389 → PMC7819306

> HTML version: https://scholar-sidekick.com/tools/pubmed-id-converter/33478389
> Last updated: 2026-08-13

Prevalence of an incompetent lip seal during growth periods throughout Japan: a large-scale, survey-based, cross-sectional study — Environmental Health and Preventive Medicine (2021)

## Identifier mapping

- **PMID:** 33478389 — [PubMed record](https://pubmed.ncbi.nlm.nih.gov/33478389/)
- **PMCID:** PMC7819306 — [PMC record](https://pmc.ncbi.nlm.nih.gov/articles/PMC7819306/)
- **DOI:** 10.1186/s12199-021-00933-5 — [Resolve](https://doi.org/10.1186/s12199-021-00933-5)

## Formatted citation (Vancouver)

```
Nogami Y, Saitoh I, Inada E, Murakami D, Iwase Y, Kubota N, et al. Prevalence of an incompetent lip seal during growth periods throughout Japan: a large-scale, survey-based, cross-sectional study. Environ Health Prev Med. 2021;26(1):11. doi:10.1186/s12199-021-00933-5.
```

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## Integrity & access status

- **Retraction:** No retraction found (Crossref, checked 2026-08-13)
- **Open access:** Open access (gold) (Unpaywall, checked 2026-08-13)
- [Read the free, legal copy](https://doi.org/10.1186/s12199-021-00933-5)

Re-check live with the [Retraction Checker](https://scholar-sidekick.com/tools/retraction-checker) or the [Open Access Checker](https://scholar-sidekick.com/tools/open-access-checker).

## About this page

This is a snapshot answer for one identifier, generated from the NCBI ID Converter, Crossref, and Unpaywall on 2026-08-13. To convert any other PMID, PMCID, or DOI, use the [PubMed ID Converter](https://scholar-sidekick.com/tools/pubmed-id-converter). To check whether a citation is real, use the [Citation Verifier](https://scholar-sidekick.com/tools/citation-verifier).

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