1. Department of Plastic Surgery, Tokyo Medical and Dental University, Yushima 1‐5‐45, Bunkyo‐ku, Tokyo 113‐8519, Japan
2. Department of Orthopedic Surgery, Tokyo Medical and Dental University, Yushima 1‐5‐45, Bunkyo‐ku, Tokyo 113‐8519, Japan
3. Creative Research Initiative “Sousei”, Hokkaido University, Kita 21 Nishi 10, Sapporo 001‐0021, Japan
4. Department of Instrumental Analysis Research Center, Tokyo Medical and Dental University, Yushima 1‐5‐45, Bunkyo‐ku, Tokyo 113‐8519, Japan
5. Department of Metallurgy and Ceramics Science, Tokyo Institute of Technology, 2‐12‐1, S7‐5 Ookayama, Megro‐ku, Tokyo 152‐8550, Japan