Eric Muhammad and Mark Sims (IMAGE) Cedars-Sinai Medical Center Caption Barber Eric Muhammad, left, takes the blood pressure of patron Mark Sims during a clinical trial of hypertension in African-American men. Credit Cedars-Sinai 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.