Adam Smith and kidney exchange, by Walter Castro and Julio Elias

 Here's a blog post with supportive quotes from Adam Smith (who if he had thought specifically about kidney exchange in The Theory of Moral Sentiments (1759) would have been not quite 200 years in advance of the first successful kidney transplant (in 1954 by Joseph Murray, between identical twins...)

Adam Smith and Kidney Exchange by Walter Castro and Julio J. Elías

"Castro and Elías return with more Smithian insights into the logic of altruism and the design of kidney exchange markets."