Blood Transfusion Standards Starts Clinical Trial to Help Heart Attack Patients Jeffrey L.Carson, MD, embarks on NIH-supported study to establish evidence-based standards BY J E N N I F E R F O R B E S M U L L E N H A R D A N D RO B I N L A L LY P H O T O S BY J O H N E M E R S O N Robert Wood Johnson I MEDICINE 29 Leader on