1. Factors affecting the increase in hospitalized medical care expenditure in Japan: analysis of national data in all 47 prefectures;Shimmura;Nippon Koshu Eisei Zasshi,1992
2. Differences in inpatient medical costs for the aged within one prefecture;Hoshi;Nippon Koshu Eisei Zasshi,1994
3. Relationship of in- and outpatient medical expenditure for the elderly to socioeconomics, medical services, and health and welfare projects;Ishii;Nippon Koshu Eisei Zasshi,1993