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Epipharyngeal abrasive therapy (EAT). (a) Cotton swabs for EAT. (b) The method of endoscopic EAT. The entire epipharyngeal wall is scrubbed using a sterile straight nasal cotton swab soaked in 0.5% ZnCl2 solution. The white arrow indicates a sterile straight nasal cotton swab. The white triangle indicates impure bleeding.
