sub:provenance { pmid:19847792dcterms:title "A specific mutation in the distant sonic hedgehog (SHH) cis-regulator (ZRS) causes Werner mesomelic syndrome (WMS) while complete ZRS duplications underlie Haas type polysyndactyly and preaxial polydactyly (PPD) with or without triphalangeal thumb." . sub:assertionhas-source:pmid:19847792 . }