[1] Fukui Saiseikai Hospital,Department of Surgery
[2] Tohoku University Graduate School of Medicine,Department of Surgical Oncology
[3] Tohoku University Graduate School of Medicine,Division of Community Health
[4] Tohoku University Graduate School of Medicine,Division of Epidemiology, Department of Public Health and Forensic Medicine
[5] University of Tsukuba,Graduate School of Comprehensive Sciences
[6] Shibukawa General Hospital,Department of Surgery
[7] The University of Tokushima Graduate School,Department of Obstetrics and Gynecology, Institute of Health Biosciences
[8] The University of Tokushima Graduate School,Department of Thoracic and Endocrine Surgery and Oncology, Institute of Health Biosciences