1. Department of Neurology, University of Utah, Utah, USA
2. Department of Pediatric Surgery, St. Luke’s International Hospital, Tokyo, Japan
3. Department of General Surgery, Saiseikai Kanagawa Prefecture Hospital, Kanagawa, Japan
4. Okinawa Naval Hospital, Okinawa, Japan
5. Misawa Air Base Hospital, Aomori, Japan
6. Department of Medical Education, Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Japan