Encyclopedia of forensic sciences / editors-in-chief, Jay A Siegel, Professor Emiritus, Michigan State University and Adjunct Professor, Indiana University, Purdue University, Indianapolis, USA, Pekka J Saukko, Professor and Chairman, Department of Forensic Medicine, University of Turku, Finland ; senior editor, Max M Houck, Department of Forensic Sciences, Consolidated Forensic Laboratory, Washington, D.C., USA.