He is also an affiliated researcher in the university's Center of Excellence on Human Capital and Economic Growth and Development. He teaches health economics and microeconomics theory. His recent work, with Gary S. Becker of the University of Chicago, has focused on markets for organs, as well as the non-monetary benefits and social returns on education. He received his doctorate in economics from the University of Chicago in 2005 and a bachelor's in economics from Universidad Torcuato Di Tella in 1996.