Personal hearing protection including active noise reduction = Les dispositifs de protection de l'ouie, y compris l'atténuation du bruit actif : the material in this publication was assembled to support a lecture series under the sponsorship of the Human Factors and Medicine Panel (HFM) presented on 25 - 26 October 2004 in Warsaw, Poland, 28 - 29 October 2004 in Brussels, Belgium, and 9 - 10 November 2004 in Virginia Beach, VA, USA (North Atlantic Treaty Organization, Research and Technology Organization, 2005)