1. Research Service VA Loma Linda Healthcare System Loma Linda California U.S.A.
2. Department of Otolaryngology Head and Neck Surgery Shanghai Ninth People's Hospital Affiliated Shanghai Jiaotong University School of Medicine Shanghai China
3. Ear Institute, Shanghai Jiaotong University School of Medicine Shanghai China
4. Department of Otolaryngology Head and Neck Surgery Loma Linda University Health Loma Linda California U.S.A.