1. Rhinology & Skull Base Surgery, Department of Otolaryngology University of Miami Miller School of Medicine Miami Florida USA
2. Otolaryngology Head & Neck Surgery Jouf University—Medical College Skaka Saudi Arabia
3. Department of Public Health Sciences Biostatistics Collaboration and Consulting Core Miami Florida USA
4. Otolaryngology, King Fahad Hospital of the University Imam Abdulrahman Bin Faisal University Khobar Saudi Arabia