1. Department of Biologic and Materials Sciences; School of Dentistry, University of Michigan; Ann Arbor Michigan USA
2. Department of Polymer Chemistry; Graduate School of Engineering, Kyoto University; Kyoto Japan
3. Macromolecular Science and Engineering Center; University of Michigan; Ann Arbor Michigan USA
4. Graduate School of Materials Science; Nara Institute of Science and Technology; Nara Japan
5. Department of Chemistry and Biochemistry; Rowan University; Glassboro New Jersey USA