1) Department of Clinical Quality Management, Osaka University Hospital, Suita, Japan
2) Department of Cardiovascular Surgery, Graduate School of Medicine, Osaka University, Suita, Japan
3) Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita, Japan
4) Department of Biodesign for Healthcare Innovation, Graduate School of Medicine, Osaka University, Suita, Japan
5) Institute of Research Initiatives, Nara Institute of Science and Technolog, Ikoma, Japan
6) Graduate School of Information Science, Department of Neurosurgery, National Hospital Organization Osaka National Hospital, Osaka, Japan

Kazue Nakajima¹⁾, Daisuke Yoshioka²⁾, Koji Tanaka³⁾, Shinichi Masuda⁴⁾, Eiji Aramaki⁵⁾, Shin Nakajima⁶⁾