1. Biomaterials Center, National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305‐0044, Japan
2. Institute for Inhalation Biology GSF‐Research Center for Environment and Health, Ingolstaedter Landstrasse 1, D‐85764 Neuherberg/Munich, Germany
3. International Center for Young Scientists (ICYS), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305‐0044, Japan
4. Department of Cardiovascular medicine, Graduate School of Medicine, Kyoto University Hospital, Kyoto 606‐8507, Japan
5. Harvard‐MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139
6. Center for Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, Massachusetts 02139
7. Max‐Planck Institute for Metals Research, Heisenberg St. 3, Stuttgart 70569, Germany
8. Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo 113‐8549, Japan