1. Department of Plastic and Reconstructive Surgery, Cell & Matrix Research Institute, School of Medicine Kyungpook National University Daegu Korea
2. Department of Otolaryngology‐Head and Neck Surgery Lenox Hill and Manhattan Eye, Ear, and Throat Hospitals, Vascular Birthmark Institute of New York, New York Facial Paralysis New York USA
3. Oral & Maxillofacial Surgery Clinic Athens Euroclinic Hospital Athens Greece
4. Center for Vascular Anomalies Eberswalde Werner Forssmann Hospital Eberswalde Germany