Arthur H. Rubenstein, MBBCh (69) has served as a director of the Company since August 1, 2004. Dr. Rubenstein is the Dean of the University of Pennsylvania School of Medicine and Executive Vice President for the University of Pennsylvania Health System (UPHS). Previously, Dr. Rubenstein was Dean and Gustave L. Levy Distinguished Professor at the Mount Sinai School of Medicine in New York from 1997 to 2001. He has also been a faculty member and chairman of the Department of Medicine at the University of Chicago. He is a distinguished member of the American Academy of Arts and Sciences and the American Association for the Advancement of Science. Dr. Rubenstein serves as a director of Glycadia and the Association of Academic Health Centers.