David Willis Johnson

Retired as President and Chief Executive Officer of Schering-Plough Corporation in April 2003. Mr. Kogan was also Chairman of Schering Plough Corporation from 1998 until 2002. He joined Schering-Plough as Executive Vice President, Pharmaceutical Operations in 1982 and became President and Chief Operating Officer in 1986 and President and Chief Executive Officer in 1996. Mr. Kogan currently is a principal of the KOGAN Group LLC, which provides consulting services to senior management at companies in the pharmaceutical and other industries. Mr. Kogan is also a director of The Bank of New York Mellon. He serves on the boards of St. Barnabas Corporation and Medical Center and New York University, and is a member of the Council on Foreign Relations.