Committee Composition

	Audit Committee	Compensation Committee	Nominating & Corporate Governance Committee
Jeffrey Chodakewitz, M.D.			Nominating & Corporate Governance Committee
Gary Ginsberg	Audit Committee
Rosana Kapeller-Libermann, M.D., Ph.D.		Compensation Committee
Michael Lynton	Audit Committee		Nominating & Corporate Governance Committee
Gary Sender	Audit Committee	Compensation Committee
Nancy A. Thornberry			Nominating & Corporate Governance Committee
Timothy M. Wright, M.D.		Compensation Committee

= Chairperson = Member = Chairman of the Board