1. Department of Materials Science and Engineering, Case Western Reserve University, Cleveland, OH 44106.
2. CollaTek, Inc., Columbus, OH 43201.
3. 3M Industrial Minerals Division, 3M Center, St. Paul, MN 55144.
4. Faculty of Veterinary Sciences, Universidad de Chile, Santiago, Chile.
5. Department of Materials Science and Engineering, University of Arizona, Tucson, AZ 85721.
6. ICI Advanced Materials, Cheshire, WA7 4QE, United Kingdom.
7. Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA 16802.
8. Department of Macromolecular Science, Case Western Reserve University, Cleveland, OH 44106.
9. Battelle Pacific Northwest Laboratories, Richland, WA 99352.
10. Oregon Graduate Institute, Beaverton, OR 97006-1999.
11. Department of Biological Sciences, Clemson University, Clemson, SC 29634.
12. Northwestern University Dental School, Chicago, IL 60611.
13. Department of Biology, Case Western Reserve University, Cleveland, OH 44106.