1. Toxicologist and project leader, Bldg. 224, Rm. A363 Center for Fire Research, National Institute of Standards and Technology, Gaithersburg, MD 20899, US.
2. The Institute of Forensic Sciences, Caparra Heights, PR, US.
3. NIST research associate from the American Iron and Steel Institute, Washington, DC, US.
4. NIST guest workers from the University of Pittsburgh Graduate School of Public Health, Pittsburgh, PA, US.