1. Techno Medica Co., Ltd., Yokohama, Kanagawa 224-0041, Japan
2. Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Sendai, Miyagi 980-8577, Japan
3. Department of Pediatric Surgery, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan
4. Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai, Miyagi 980-8577, Japan
5. Fuji Silysia Chemical Ltd., Kasugai, Aichi 487-0013, Japan
6. Research Institute for Chemical Process Technology, National Institute of Advanced Industrial Science and Technology (AIST), Sendai, Miyagi 983-855, Japan