Find a Sonix Study Site To learn more about this study, please contact one of the local study sites listed below: Boston, MAMass Eye and EarContact: Michael CheungPhone: 617-573-6060Email: mcheung0@meei.harvard.edu or centerforclinicalresearchoperations@meei.harvard.edu Boston, MAComing Soon Bethesda, MDComing Soon Oklahoma City, OKHearts for Hearing Contact: René Gifford, PhD, PI Phone: 405-548-4300 Email: rene.gifford@heartsforhearing.org Allentown, PALehigh Valley Health NetworkContact: Danielle KoehlerPhone: 610-402-9543Email: danielle.koehler@jefferson.edu