Photo 2 (IMAGE) The University of Hong Kong Caption (From right) Dr Chan Koon-ho, Dr Kevin Cheng King-fai and Dr Edward Chu Yin-lun announce the clinical outcomes of their study. Extending the stroke treatment golden period from six hours to 24 hours has shown significant benefits for a larger number of patients. 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.