Rombout, J.

complication surgery patient result grade otodata operation project chapter event procedure feedback surgeon sinus ear surgery quality postoperative endoscopic sinus surgery period table hearing sinus surgery otosclerosis surgery feedback information information literature improvement number ear surgery data otolaryngol collection ossicular chain reconstructions fletcher index overview ossicular reconstruction canal wall outcome hospital otosclerosi stape classification mastoidectomy grade c chain endoscopic study change data collection recording adverse-events practice quality control revision treatment grade b canal ossicular chain reconstruction experience audit stapedotomy database figure stapes surgery classification proposal example group discussion laryngoscope department basis performance system consequence laryngol operation notes damage comparison control category