Effectiveness of Surgical and Cotton Masks in Blocking SARS-CoV-2: A Controlled Comparison in 4 Patients.

Bae S, Kim MC, Kim JY, Cha HH, Lim JS, Jung J, Kim MJ, Oh DK, Lee MK, Choi SH, Sung M, Hong SB, Chung JW, Kim SH

DOI: 10.7326/m20-1342
Published: 2020 Jul 7
Container: Annals of internal medicine
Publisher: Not recorded
Open access: yes

Credibility signals

serious concern Score 10/100 under policy 1.0.0. This is a metadata assessment, not a judgment of the paper's conclusions.

Show all credibility signals

cautionDOI registered: No matching Crossref record was present in this response. Source: Crossref; license: CC0 metadata
cautionDOI resolves: No matching Crossref record was present in this response. Source: Crossref; license: CC0 metadata
not scoredDirectory of Open Access Journals: No matching DOAJ record was present in this response. No allow-list match; this is not evidence of low credibility. Source: DOAJ; license: CC0
not scoredMEDLINE indexed: Not checked or no result supplied; no credibility inference made. Source: No authority result supplied; license: Unknown
not scoredOpenAlex core source: Not checked or no result supplied; no credibility inference made. Source: No authority result supplied; license: Unknown
not scoredKnown publisher allow-list: Not checked or no result supplied; no credibility inference made. Source: No authority result supplied; license: Unknown
not scoredROR affiliation: Not checked or no result supplied; no credibility inference made. Source: No authority result supplied; license: Unknown
serious concernRetraction Watch retraction: 1 retraction notice matched this DOI. Source: Retraction Watch; license: CC BY 4.0
not scoredRetraction Watch expression of concern: No expression of concern notice matched this DOI in the deployed snapshot. No matching event found; coverage may be incomplete. Source: Retraction Watch; license: CC BY 4.0
not scoredRetraction Watch correction: No correction notice matched this DOI in the deployed snapshot. No matching event found; coverage may be incomplete. Source: Retraction Watch; license: CC BY 4.0
not scoredRetraction Watch reinstatement: No reinstatement notice matched this DOI in the deployed snapshot. No matching event found; coverage may be incomplete. Source: Retraction Watch; license: CC BY 4.0
supportingOpen access status: Normalized open-access status: open. Source: Normalized work metadata; license: Caller-provided; provenance license not supplied to scorer
not scoredPublication license: Not checked or no result supplied; no credibility inference made. Source: No authority result supplied; license: Unknown
not scoredPublication version: A publication version was supplied but is not scored. Source: Normalized work metadata; license: Caller-provided; provenance license not supplied to scorer
cautionMetadata completeness: 5 of 6 scored descriptive metadata groups are present; missing fields increase uncertainty. Source: Normalized work metadata; license: Caller-provided; provenance license not supplied to scorer

Cite this work

BibTeX

@article{allodium:10.7326/m20-1342,
  title = {Effectiveness of Surgical and Cotton Masks in Blocking SARS-CoV-2: A Controlled Comparison in 4 Patients.},
  author = {Bae S and Kim MC and Kim JY and Cha HH and Lim JS and Jung J and Kim MJ and Oh DK and Lee MK and Choi SH and Sung M and Hong SB and Chung JW and Kim SH},
  year = {2020},
  journal = {Annals of internal medicine},
  doi = {10.7326/m20-1342},
  url = {https://doi.org/10.7326/m20-1342}
}

RIS

TY  - JOUR
TI  - Effectiveness of Surgical and Cotton Masks in Blocking SARS-CoV-2: A Controlled Comparison in 4 Patients.
AU  - Bae S
AU  - Kim MC
AU  - Kim JY
AU  - Cha HH
AU  - Lim JS
AU  - Jung J
AU  - Kim MJ
AU  - Oh DK
AU  - Lee MK
AU  - Choi SH
AU  - Sung M
AU  - Hong SB
AU  - Chung JW
AU  - Kim SH
PY  - 2020
JO  - Annals of internal medicine
DO  - 10.7326/m20-1342
UR  - https://doi.org/10.7326/m20-1342
ER  -

APA

S, B., MC, K., JY, K., HH, C., JS, L., J, J., MJ, K., DK, O., MK, L., SH, C., M, S., SB, H., JW, C., & SH, K. (2020). Effectiveness of Surgical and Cotton Masks in Blocking SARS-CoV-2: A Controlled Comparison in 4 Patients.. Annals of internal medicine. https://doi.org/10.7326/m20-1342

Source records

pubmed · retrieved 2026-09-24T20:57:25.526Z