1. Division of Facial Plastic and Reconstructive Surgery, Department of Otolaryngology–Head and Neck Surgery, Stanford University School of Medicine, Stanford, California
2. Department of Otolaryngology–Head and Neck Surgery, Faculty of Medicine, Mansoura University, Mansoura, Egypt
3. Currently at the Division of Facial Plastic and Reconstructive Surgery, Department of Otolaryngology–Head and Neck Surgery, Washington University School of Medicine, St Louis, Missouri