Deputy Director, Children's Cancer Center,

Surgeon-in-Chief, Division of Surgery, Department of Surgical Specialties,
Division of Surgical Oncology, Children's Cancer Center,
National Center for Child Health and Development;

Surgeon-in -Chief, Division of Pediatric Surgical Oncology,
National Cancer Center Hospital;

Chairperson, the Japanese Society of Pediatric Hematology and Oncology;

Chairperson of Solid tumor Committee, Japan Children’s Cancer Group;

Councilor, Japanese Society of Pediatric Surgery.