A 2019 review on hearing restoration and regenerative medicine stated that [url=https://bellville.gob.ar/2019/08/27/educacion-vial-en-la-casa-del-nino/]https://bellville.gob.ar/2019/08/27/educacion-vial-en-la-casa-del-nino/[/url] for otic cells derived from stem cells can greatly improve hearing.