Global Pendred Syndrome Market, By Treatment (Cochlear Implant, Hearing Aids, and Radioactive Iodine) Route of Administration (Oral, Implantation), Diagnosis (Genetic Testing, Perchlorate Washout Test, and Others), End- Users (Hospitals, Homecare, Specialty Clinics, Otolaryngologist, and Others) - Industry Trends and Forecast to 2030.