Why Do the Japanese Spend So Much on Drugs?

Seiritsu Ogura and Takehiko Hagino, Labor Markets and Firm Benefit Policies in Japan and the United States (University of Chicago Press, 2003), chap. 9, https://www.nber.org/books-and-chapters/labor-markets-and-firm-benefit-policies-japan-and-united-states/why-do-japanese-spend-so-much-drugs.