1. Department of Plastic Surgery, The First Affiliated Hospital of Jinan University, Key Laboratory of Regenerative Medicine, Ministry of Education, Guangzhou, Guangdong 510630, P.R. China
2. Department of Orthopedics, Third Affiliated Hospital of Sun Yat‑Sen University, Guangzhou, Guangdong 510630, P.R. China
3. Department of Plastic Surgery, Changhai Hospital, The Second Military Medical University, Shanghai 200433, P.R. China