1) The Jikei University School of Medicine, Department of Kidney Regenerative Medicine, Tokyo, Japan
2) Gastroenterological Surgery Ⅱ, Hokkaido University Graduate School of Medicine, Sapporo, Japan
3) Department of Bioenvironmental Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
4) Department of Neurosurgery, Nagoya University, Graduate School of Medicine, Nagoya, Japan
5) The Department of Otorhinolaryngology at, The Jikei University School of Medicine, Tokyo, Japan
6) Department of Orthopedics, Tokushima University, Tokushima, Japan
7) Bioethics Policy Study Group, Tokyo, Japan

Eiji Kobayashi¹⁾, Toshiaki Shichinohe²⁾, Takane Suzuki³⁾, Yoshio Araki⁴⁾, Kazuhisa Yamamoto⁵⁾, Tomohiro Goto⁶⁾, Jiro Nudeshima⁷⁾