From the Federal Bureau of Investigation, FBI Laboratory, Quantico, VA.
Received for publication October 3, 2007; accepted November 11, 2007.
Reprints: Marc A. LeBeau, PhD, Chemistry Unit Chief, FBI Laboratory, 2501 Investigation Pkwy, Quantico, VA 22135 (e-mail: [email protected]).
doi: 10.1097/FTD.0b013e31816791d7