1. Graduate student, Forensic Science Program, Department of Criminal Justice, University of Alabama at Birmingham, Birmingham, AL, and analyst, AccuTox Analytical Laboratories, Attalla, AL, US.
2. Fulbright Research Scholar, Forensic Science Unit, Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, Scotland, GB.
3. Associate professor, Forensic Science Program, Department of Criminal Justice, University of Alabama at Birmingham, Birmingham, AL 35294, GB.