1) Department of Pediatric Surgery, Kagoshima University, Kagoshima, Japan
2) Department of Pediatric Surgery, Chiba University, Chiba, Japan
3) Department of Tissue stem cell / life dentistry, The University of Tokyo, Tokyo, Japan
4) Department of Pediatric Surgery, Jichi Medical University, Shimono, Japan
5) Department of Pediatric Surgical Oncology and Surgery, National Center for Child Health and Development, Tokyo, Japan
6) Department of Pediatric Surgery, Kyusyu University of Medicine, Fukuoka, Japan
7) Department of Pediatric Surgery, Osaka University of Medicine, Suita, Japan
8) Committee of Board Certification, Japanese Society of Pediatric Surgeons, Tokyo, Japan

Satoshi Ieiri¹⁾⁸⁾, Tomoro Hishiki²⁾⁸⁾, Makoto Komura³⁾⁸⁾, Shigeru Ono⁴⁾⁸⁾, Akihiro Yoneda⁵⁾⁸⁾, Tatsuro Tajiri⁶⁾⁸⁾, Hiroomi Okuyama⁷⁾⁸⁾