1. Safety & Construction R&D, DuPont, Midland, Michigan 48642, United States
2. Analytical Sciences, Core R&D, Dow, Midland, Michigan 48667, United States
3. Toxicology & Environmental Research Consulting, Dow, Midland, Michigan 48667, United States
4. Corporate Center for Analytical Sciences, DuPont, Midland, Michigan 48642, United States
5. Polyurethanes, Dow, Derbyshire SK22 1BR, United Kingdom