Mr. Michaelson has served as a Director and Chairman of the Audit Committee since October 2004. Mr. Michaelson is the Chief Financial Officer of Life Sciences Research Inc., a contract research organization providing global outsourcing services to the pharmaceutical industry. Prior to his joining LSR in 1998, he was a partner in Focused Healthcare Partners, a healthcare investment company. Mr. Michaelson was the Chief Financial Officer of Unilab Corporation, California's largest provider of clinical laboratory services, from 1993 to 1997, and held a succession of senior management positions at MetPath (now Quest Diagnostics) between 1982 and 1993. Mr. Michaelson was a financial analyst at IBM from 1979 to 1982.