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Anterior deposition fractions in total nose (TN % nebulizer output) and in maxillary sinuses without and with lead mask (LM) shielding of the central nasal cavity (% total nasal deposition, TN) in healthy volunteers and in CRS patients before and after sinus surgery (FESS) after pulsating aerosol delivery. **: p < 0.01 compared to healthy; +: p < 0.05 and ++: p < 0.01 before versus after FESS in CRS patients.
