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Calibration for 30-day mortality models for RH, LAR, and PD based on the US data using the Japan/NCD model (US-JP model) and the Japanese data using the US/ACS-NSQIP model (JP-US model). ACS-NSQIP = American College of Surgeons National Surgical Quality Improvement Program, JP = Japan, LAR = low anterior resection, PD = pancreaticoduodenectomy, RH = right hemicolectomy, US = United States.
