The authors would like to thank Grant Kovel for providing excellent research assistance and seminar participants at the BU-Harvard-MIT Health Economics seminar, the Highland Health Economics Symposium, the Murphy Institute Health Policy Working Group seminar, Fiona Scott Morton, David Bradford, Liran Einav, Luca Maini, Mark Shepard, Anirban Basu, Bob Rebitzer and Jim Rebitzer, and Rebekah…