Research team 2 (IMAGE) The University of Hong Kong Caption HKU Dentistry Oral and Maxillofacial Surgery research team: Dr Mike Leung (left) and Ms Natalie Wong compare the changes of patients’ quality of life (QoL) after receiving IVRO or SSRO as the treatment for mandibular prognathism. 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.