Claim: The Nagashima Aiseien Sanatorium is a sanatorium in Osaka, Japan with a dwindling number of patients from year 2003(488) to 2009(336).
Evidence: The Nagashima Aiseien Sanatorium (国立療養所長島愛生園), or the National Sanatorium Nagashima Aiseien, is a sanatorium on the island of Nagashima in Setouchi, Okayama, Japan founded in 1930 for the treatment of leprosy. 
6539 Mushiake, Oku-machi, Setouchi, Okayama, Japan