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In this study, we used a deidentified hospital administrative database, assembled by Medical Data Vision Co., Ltd., of inpatients and outpatients from Japanese acute-care hospitals [1]. The main advantage of this database is that it has the highest patient enrollment rate of any commercial database in Japan. The basic premise is that, as we have mentioned in our article [1], one of the research limitations of the MDV analyzer is that we do not have access to the raw data of the patients. In addition, drugs were tabulated for each year to account for variations in prescriptions over the course of a year.