1. Stem Cell and Regenerative Medicine Lab, Beijing Institute of Transfusion Medicine, Beijing, China.
2. Beijing Institute of Otorhinolaryngology, Affiliated Beijing Tongren Hospital of Capital Medical University, Beijing, China.
3. Key Laboratory for Advanced Manufacturing by Materials Processing Technology, Department of Mechanical Engineering, TsingHua University, Beijing, China.
4. Plastic and Aesthetic Surgery Center, Peking Union Medical College Hospital, Beijing, China.