1. Ramboll Environ, Research Triangle Park, NC, USA,
2. Ramboll Environ, Monroe, LA, USA,
3. ENVIRON International Corporation, Monroe, LA, USA,
4. Pacific Northwest National Laboratory, Richland, WA, USA,
5. British American Tobacco, GR&D, Southampton, United Kingdom of Great Britain and Northern Ireland, and
6. R.J. Reynolds Tobacco Company, Alexandria, VA, USA