Department of internal medicine , matsudo national sanatorium hospital .

国立疗养所松病院内科。

Dental hygienist section , dental hospital , nihon university school of dentistry at matsudo .

日本大学松学部付属科病院科卫生士室。

Research institute of oral science , nihon university school of dentistry at matsudo .

日本大学松学部口腔科学研究所。