Events & Webcasts

Earnings Calls * All scheduled events are subject to change.

• April 28, 2010 at 8:59am

• Q1 2010 Earnings Conference Call

• Listen to the webcast

Meetings & Conferences* All scheduled events are subject to change.

• August 7 - 11, 2010
• Seattle, WA

• AANA Annual Meeting

• August 10, 2010
• Boston, MA

• Canaccord Adams Global Growth Conference

• September 20 - 22, 2010
• New York, NY

• UBS Global Life Sciences Conference

Annual Shareholders meeting * All scheduled events are subject to change.

• TBD

• TBD