1. Department of General and Special Surgery, Faculty of Medicine, The Hashemite University, Zarka, Jordan
2. Department of Otorhinolaryngology, Head and Neck Surgery, Prince Hamza Hospital, Amman, Jordan
3. Department of Dermatology, Prince Hamza Hospital, Amman, Jordan
4. Department of Otorhinolaryngology, Head and Neck Surgery, The University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma