Chao Explains PHAZER Setup (IMAGE) Johns Hopkins University Caption This is Chao He explaining how the study's PHAZER setup works. Credit Chanapa Tantibanchachai Usage Restrictions None License Licensed 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.