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2. 2) Ministry of Health, Labour and Welfare: White Paper Data Base <http://www.hakusyo.mhlw.go.jp/wp/index.htm>, Ministry of Health and Welfare White Paper Data Base, 1997, First edition part I chapter 4 second paragraph 2, “Youkaigo Koureisyano Zouka.”
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4. The Risk of Adverse Reactions in Elderly Patients Undergoing Polypharmacy.