1. Vascular Birthmark Institute of New York, New York
2. Department of Otolaryngology, Lenox Hill Hospital and Manhattan Eye, Ear, and Throat Hospitals,, New York, New York
3. Charité Universitätsmedizin Berlin, Berlin, Germany
4. Department of Otorhinolaryngology, Head and Neck Surgery, Montefiore Medical Center, Bronx, New York