Price Indexes for Medical Care Goods and Services -- An Overview of Measurement Issues

Ernst R. Berndt, David M. Cutler, Richard Frank, Zvi Griliches, Joseph P. Newhouse, and Jack E. Triplett, Medical Care Output and Productivity (University of Chicago Press, 2001), chap. 4, https://www.nber.org/books-and-chapters/medical-care-output-and-productivity/price-indexes-medical-care-goods-and-services-overview-measurement-issues.