1. Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
2. School of Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
3. Department of Dermatology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
4. International Center for Wound Repair and Regeneration, National Cheng Kung University, Tainan, Taiwan
5. Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan