1. Polymers Division, National Institute of Standards and Technology, Building 224, Room B210, Gaithersburg, MD 20899
2. Department of Chemical Engineering, Michigan Technological University, 1400 Townsend Drive, Houston, MI 49931-1295
3. Department of Chemistry, University of Alabama, 901 South 14th Street, Birmingham, AL 35294
4. Polymer Science and Engineering Department, University of Massachusetts, 701 Lederle Graduate Tower, Amherst, MA 01003