Lung Cancer Study Group:LCSG
Lung Cancer Surgical Study Group:LCSSG
Stomach Cancer Study Group:SCSG
Japan Esophageal Oncology Group:JEOG
Breast Cancer Study Group:BCSG
Lymphoma Study Group:LSG
Gynecologic Cancer Study Group:GCSG
Colorectal Cancer Study Group:CCSG
Urologic Oncology Study Group:UOSG
Bone and Soft Tissue Tumor Study Group:BSTTSG
Radiation Therapy Study Group:RTSG
Brain Tumor Study Group:BTSG
Hepatobiliary Pancreatic Oncology Group:HBPOG
Gastrointestinal Endoscopy Study Group:GIESG
Head and Neck Cancer Study Group:HNCSG
Dermatologic Study Group:DSG
JCOG/Committee/Data Center
Gastrointestinal Oncology Study Group（reorganized）
