1. Department of Breast and Endocrine Surgery, Osaka City University Graduate School of Medicine, Abeno-ku, Osaka 545-8585, Japan
2. Department of Pharmacology, Osaka City University Graduate School of Medicine, Abeno-ku, Osaka 545-8585, Japan
3. Department of Gastrointestinal Surgery, Osaka City University Graduate School of Medicine, Abeno-ku, Osaka 545-8585, Japan
4. Department of Hepato-Biliary‑Pancreatic Surgery, Osaka City University Graduate School of Medicine, Abeno-ku, Osaka 545-8585, Japan