> **Service interruption: no retrievable sources**
>
> In this run, the retrieval layer returned zero papers and zero citable contexts, so a fully cited report on **EDN3/EDNRB Waardenburg–Shah syndrome** with PMIDs, URLs, publication dates, and abstract quotes cannot be generated.
>
> Minimal inputs needed to proceed:
> - PMIDs for key EDN3/EDNRB Waardenburg–Shah papers
> - DOI links to relevant articles
> - PDFs of primary papers or reviews
> - OMIM disease or gene entry links
> - Orphanet disease page links
> - GeneReviews chapter or stable link


*Blockquote: This blockquote documents that no retrievable sources or citable contexts were available in the session, preventing generation of a fully referenced disease report. It also lists the minimum source inputs needed to enable a successful follow-up run.*