Reference health
Says who? The significance of sampling in mental health surveys during COVID-19
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5/5 checkable references clean · checked 2026-07-26
Every reference with a DOI in the deposited reference list resolved to a known work in Crossref or DataCite at the dated check, and none carried a retraction, withdrawal, or removal notice.
2 without a DOI — not checked. A reference deposited without a DOI is never matched by title or guessed at; it stays outside the checked set, and this line discloses that.
The 5 checked references that resolve
resolves10.1016/S2215-0366(20)30168-1
Multidisciplinary research priorities for the COVID-19 pandemic: a call for action for mental health science
resolves10.1073/pnas.1812593116
Systematic assessment of the sex ratio at birth for all countries and estimation of national imbalances and regional reference levels
resolves10.2307/2342192
On the Two Different Aspects of the Representative Method: The Method of Stratified Sampling and the Method of Purposive Selection
resolves10.1016/S2468-2667(19)30059-3
Prevalence of maternal mental illness among children and adolescents in the UK between 2005 and 2017: a national retrospective cohort analysis
resolves10.1016/S2215-0366(20)30150-4
Key ethical questions for research during the COVID-19 pandemic
The 2 references without a DOI — listed, not checked
no DOI — not checked10.1016/S2215-0366(20)30237-6_bib2
no DOI — not checkedA nationwide survey of psychological distress among Chinese people in the COVID-19 epidemic: implications and policy recommendations
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or importance of the work itself, and nothing about references deposited without a DOI.
checked 2026-07-26 — re-checked daily as this page is visited; titles and statuses come from Crossref and DataCite and are not part of the signed record
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