1. Graduate School of Life Sciences; Tohoku University; Aoba-ku Sendai 980-8577 Japan
2. Faculty of Science; Yamagata University; Kojirakawa-machi Yamagata 990-8560 Japan
3. JEM Utilization Center, Human Spaceflight Technology Directorate, Japan Aerospace Exploration Agency; Sengen Tsukuba 305-8505 Japan
4. Space Utilization Promotion Department, Japan Space Forum; Chiyoda-ku Tokyo 101-0062 Japan
5. Future Development Division, Advanced Engineering Services Corporation, Ltd.; Takezono Tsukuba 305-0032 Japan