Prince Sattam bin Abdulaziz, the Deputy Governor of Riyadh Region who is also Honorary Chairman of the Saudi Arabian Society for Nose, Ear and Throat, patronized here tonight the opening ceremony of the society's 4th National Symposium titled "Developments of Implantation of Ear's Electronic Cochlea". At the venue, Prince Sattam was received by King Saud University President Dr. Abdullah bin Mohammed Alfaisal and senior academicians.