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The device for UNWO. Aerosol generated by ultrasonic nebulizer was directed through a warming and oxygen-augmenting unit to reach a calibrated temperature of 32-35 °C at the mouthpiece. 1, heat connector; 2, power switch; 3, control panel; 4, oxygen tube (connected to oxygen source); 5, oxygen flow meter; 6, liquid reservoir; 7, temperature probe; 8, mouthpiece. UNWO, ultrasonic nebulization with warming and oxygen.
