1. Division of Reconstructive Microsurgery, Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Linkou Medical Center and Chang Gung Medical College and Chang Gung University, Taoyuan, Taiwan
2. Department of Plastic Surgery, Maastricht University Medical Center, Maastricht, The Netherlands
3. Department of Plastic, Reconstructive and Aesthetic Surgery, Hand surgery, Alfried Krupp Hospital, Essen, Germany
4. Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan