1. Department of Plastic Surgery, The First Affiliated Hospital of Jinan University, Key Laboratory of Regenerative Medicine, Ministry of Education, Guangzhou, Guangdong Province, P.R. China.
2. Department of Plastic Surgery, Guangzhou Liuhuaqiao Hospital, Guangzhou, Guangdong Province, P.R. China.
3. Wound Healing and Cell Biology Laboratory, Institute for Basic Research, Trauma Center of Postgraduate Medical College, General Hospital of PLA, Beijing, P.R. China.