Airway images (IMAGE) The University of Hong Kong Caption The pre-operative and post-operative airway images, showing a significant increase in the airway volume after SMA. Credit The University of Hong Kong Usage Restrictions N/A License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.