# Development of a core outcome set for effectiveness studies of breech birth at term (Breech-COS)—an international multi-stakeholder Delphi study: study protocol

> Research article (Trials, 2022) · cited 11× · AI/ML

**Wikidata**: [openalex:W4225710863](https://www.wikidata.org/wiki/openalex:W4225710863)  
**Source**: https://4ort.xyz/entity/development-of-a-core-outcome-set-for-effectiveness-studies-of-breech-birth-at-term-breech-cos-an-international-multi-st