mohammadreza omrani otorhinolaryngologist, sadi hospital, isfahan, iran behrouz barati assistant professor, department of otorhinolaryngology and head and neck surgery, ayatollah taleghani hospital, shaheed beheshti university of medical sciences, tehran, iran navid omidifar resident, department of clinical and surgical pathology, shiraz university of medical sciences, shiraz, iran ahmad reza okhovat associate professor, department of otolaryngology and head and neck surgery, isfahan university of medical sciences, isfahan, iran seyed amirhossein ghazizadeh hashemi assistant professor, department of otorhinolaryngology and head and neck surgery, loghman hospital, shaheed beheshti medical university, tehran, iran

Jairo Rosa Silva Junior Cesar Augusto Ferreira Alfredo José Rodrigues Paulo Roberto Barbosa Evora