1. Vascular Birthmark Institute of New York, New York, New York, USA.
2. Department of Otolaryngology—Head and Neck Surgery, The Pennsylvania State University, College of Medicine, Hershey, Pennsylvania, USA.
3. Department of Otolaryngology—Lenox Hill Hospital & Manhattan Eye, Ear and Throat Hospital, New York, New York, USA.
4. Department of Mathematics, Hofstra University, Hempstead, New York, USA.
5. Department of Ophthalmology, New York University Grossman School of Medicine, New York, New York, USA.
6. Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, USA.