1. Department of Ophthalmology, Joint Shantou International Eye Center of Shantou University and Chinese University of Hong Kong, Shantou, Guangdong, China.
2. Key Laboratory of Tissue Repair and Regeneration of PLA, and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, The Fourth Medical Center of General Hospital of PLA, Beijing, P.R. China.
3. Institute of Basic Medical Sciences, General Hospital of PLA, Beijing, P.R. China.
4. Department of Burn and Plastic Surgery, General Hospital of Southern Theater Command, PLA, Guangzhou, Guangdong, P.R. China.