Simon X. Benito has served as a director since April 2005. Mr. Benito is currently a director and chairman of the Audit Committee of Inovio Biomedical Corporation, a medical device company. From 1974 to 1999, Mr. Benito held various positions at Merck & Co Inc. including Senior Vice President, Vaccine Division from 1996 to 1999, Executive Vice President, Merck-Medco Managed Care from 1994 to 1996 and Executive Director and Vice President, Merck Human Health, Japan from 1986-1993. Mr. Benito was a Fellow of the Institute of Chartered Accountants in England and Wales from 1969 to 1999 until his retirement from Merck.