1) Department of Surgery, Higashiosaka City Medical Center, Higashiosaka, Japan
2) Department of Operating Room, Higashiosaka City Medical Center, Higashiosaka, Japan
3) Department of Patient Safety and Quality Management, Higashiosaka City Medical Center, Higashiosaka, Japan

Terumasa Yamada¹⁾³⁾, Masakazu Ikenaga¹⁾, Yujiro Tsuda¹⁾, Masami Ueda¹⁾, Shinsuke Nakashima¹⁾, Tsukasa Tanida¹⁾, Jin Matsuyama¹⁾, Yumiko Oteki²⁾, Takafumi Nakanishi³⁾, Yoshimi Mochida³⁾