Department of Gastroenterological and Transplant Surgery;
Applied Life Sciences;
Institute of Biomedical and Health Sciences;
Hiroshima University;
Department of Surgery;
National Hospital Organization Higashihiroshima Medical Center;
Department of Surgery;
Institute for Clinical Research;
National Hospital Organization Kure Medical Center and Chu-goku Cancer Center;
Department of Surgery;
National Hospital Organization Hiroshima-nishi Medical Center;
Hypercoagulable state; Gastroenterological surgery; Soluble fibrin monomer complex; Venous thromboembolism; Anticoagulant therapy;