1. School of Electronics Engineering, College of IT Engineering, Kyungpook National University, Daegu, Korea;
2. Eaton-Peabody Laboratories, Massachusetts Eye and Ear Infirmary (MEEI), Boston, MA, USA;
3. Department of Otology and Laryngology, Harvard Medical School, Boston, MA, USA;
4. Department of Otorhinolaryngology, Daegu Veterans Hospital, Daegu, Korea;
5. Department of Otorhinolaryngology, College of Medicine, Ajou University, Suwon, Korea;
6. Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA;
7. Beckman Institute for Advanced Science, Urbana, IL, USA;
8. School of Nano-Bioscience and Chemical Engineering, School of Electrical and Computer Engineering, Ulsan National Institute of Science and Technology, Ulsan, Korea