Department of Medical Informatics and Statistics;
Niigata University Graduate School of Medical and Dental Sciences;
Niigata;
Japan;
Department of Pharmacy;
Niigata University Medical and Dental Hospital;
Niigata;
Japan;
Department of Health Informatics;
Niigata University of Health and Welfare;
Niigata;
Japan;
Division of Digestive and General Surgery;
Niigata University Graduate School of Medical and Dental Sciences;
Niigata;
Japan;
Department of Gastroenterological Surgery;
Yokohama City University School of Medicine;
Kanagawa;
Japan;
Department of Medical Informatics;
Niigata University Medical and Dental Hospital;
Niigata;
Japan;
Cost-Effectiveness; Incremental; Cost-Effectiveness; Ratio; (ICER); Quality-Adjusted; Life; Year; (QALY); Chemotherapy; HER2-Negative; Breast; Cancer;