This 6-minute quick procedure of local anesthesia injection & disinfection for ear surgery ( various tympanoplasty & mastoidectomy for COM with or without cholesteatoma ) under local or general anesthesia has been performed by me for almost 20 years.
"6-minute procedure of local anesthesia injection & disinfection for COM surgery. "
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https://www.youtube.com/watch?v=X8c4MJ7eDP4