H. Luo (IMAGE) Emory Health Sciences Caption Hanqi Luo, co-principal investigator of the study and an assistant professor at Emory University’s Rollins School of Public Health Credit Emory University 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.