> No citable sources were retrieved in this run for **EDN3/EDNRB Waardenburg–Shah syndrome**, so a fully PMID-cited report cannot be produced in this session.
>
> To enable a complete evidence-backed report, please provide one or more retrievable source inputs: **PMIDs**, **DOI links**, **PDFs of primary papers or reviews**, **OMIM disease/gene entries**, **Orphanet disease pages**, or a **GeneReviews chapter/link**.
>
> Substitute artifacts prepared instead include: a **retrieval audit**, **blocker/constraint summaries**, a **reproducible query list**, and a **next-run input package** describing the minimum sources needed for a successful follow-up report.


*Blockquote: This blockquote explains why a fully cited EDN3/EDNRB Waardenburg–Shah report could not be generated in the current run. It also lists the minimum source materials needed and summarizes the substitute artifacts prepared to support a follow-up run.*