1. Department of Plastic Surgery Peking University Third Hospital Beijing China
2. Hearing Ctr Department of Otolaryngology, Head and Neck Surgery West China Hospital Sichuan University Chengdu China
3. State Key Laboratory of Biotherapy and Cancer Center West China Hospital Sichuan University Chengdu China
4. Institute of Systems Biomedicine Peking University Beijing China
5. Clinical Stem Cell Research Center Peking University Third Hospital Beijing China