Most PMC articles come from peer-reviewed journals, but PMC is an archive and also includes clearly labeled preprints.

No—the NCBI platform hosts both peer-reviewed papers and other content; peer review depends on the source journal, not NCBI.

No, items listed on PubMed aren’t all peer-reviewed; PubMed is an index that also shows preprints and non-refereed content.

No, PubMed indexes many sources, so not every PubMed article is peer-reviewed; check the journal policy and the record’s article type.

No, PubMed is a search database; many indexed papers are peer reviewed, but PubMed also includes items that aren’t.

No, medical journals vary: many use external review for research, while editorials, news, and some titles publish without it.

Yes, most medical journals use peer review, though processes and rigor vary by title.

Yes, in medical publishing, books rarely get journal-style peer review; some presses use external reviewers for monographs and chapters.

Yes, books can be used in medical evidence reviews when they add context, methods, or authoritative guidance alongside primary studies.

Yes, Anki can teach new material and handle review in medical school when cards are built well and schedules stay consistent.