To write an unstructured abstract, use the same approach as for a structured abstract: summarise the context of your research, your methods, your findings and the key takeaways, but do so as a single ...

Adoption of the structured abstract would require action by scientists and editors to establish formats and vocabularies, as was done for Gene Ontology (Nature Genet. 25, 25–29; 2000).

The structured abstract would replace the paragraph-style narrative summary-typically either an APA-style abstract or "editor's introduction"-now present at the beginning of many articles.

Recent policy recommendations involving the putative primacy of randomized clinical trials in educational settings have reignited research paradigm debates. The authors of this article use the vehicle ...

Original primary research, study protocols, systematic reviews, scoping reviews, and short- and long-term clinical trials should all be submitted in this format. Scoping reviews should still ...