> **Cited report unavailable due to missing retrievable sources**
>
> No citable source contexts were retrieved in this run, so the system cannot produce the requested PMID-cited report on EDN3/EDNRB Waardenburg–Shah syndrome.
>
> To enable the report, please provide at least one of the following retrievable inputs:
> - PMIDs for key EDN3/EDNRB Waardenburg–Shah papers
> - DOI links to relevant articles
> - PDFs of primary papers or reviews
> - OMIM disease/gene entries
> - Orphanet disease page(s)
> - GeneReviews chapter/link


*Blockquote: This blockquote explains why a cited report could not be generated in the current run. It also gives the minimum source types needed to enable a fully referenced follow-up report.*