If you cannot attend, you may participate in the public briefing by listening to a live audio webcast and submitting questions using an e-mail form at http://national-academies.org.  The webcast requires RealPlayer software, available free at http://www.real.com/player.

The following committee members will be present to answer questions: Barbara Schneeman, Chair; and Alice Clark, Joseph Lau, and Elizabeth Jeffrey, committee members.