Webcast Calendar [Please see updating procedure at the end of this post. All times are U.S. ET unless indicated otherwise.] NOTE: ANYONE MAY UPDATE THIS FILE Edits: Add Nasdaq/Leerink Swann conference, MRK Annual Business Review; delete obsolete entries. Nasdaq/Leerink Swann Healthcare Forum Dec 8, 2008 9am-4pm <a href='read_msg.asp?message_id=34006599'>#msg-34006599</a> MRK Annual Business Review 12/9/08 9am-1pm <a href="http://www.merck.com/finance/" target="_blank">http://www.merck.com/finance/</a> JP Morgan Healthcare Conference January 12-15, 2009 <a href="http://www.jpmorgan.com/pages/jpmorgan/investbk/global/na/usconferences/hc09" target="_blank">http://www.jpmorgan.com/pages/jpmorgan/investbk/global/na/usconferences/hc09</a> -- Procedure for Updating Calendar When adding or modifying entries, please follow these steps: 1. Copy the complete text from the old calendar. 2. Make your additions or modifications, inserting new items in alphabetical or chronological order as the case may be. 3. Near the top of the message, give a very brief description of your changes (e.g. “Edits: Added JPMorgan conference”). 4. Post the updated calendar in a new message as a reply to the message with the old calendar.