Jerold Chun MD, PhD (IMAGE) Sanford Burnham Prebys Caption Jerold Chun MD, PhD, is a professor in the Degenerative Diseases Program at Sanford Burnham Prebys. Credit Sanford Burnham Prebys Usage Restrictions None 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.