Inclusion Criteria:  Biopsy confirmed adenocarcinoma of stomach scheduled to undergo radical gastrectomy Between 20-80 ASA score (American society of anesthesiology) class: I - III Signed to informed consent after through explanation about the study  Exclusion Criteria:  distant metastasis EMR/ESD canddiate complicated gastric cancer (obstruction or perforation) Active other primary tumor Vulerable subject (illiterate, pregnant)