Traffic Congestion and Infant Health: Evidence from E-ZPass
---- Acknowledgements -----
We are grateful to the MacArthur foundation for financial support. We thank Katherine Hempstead and Matthew Weinberg of the New Jersey Department of Health, and Craig Edelman of the Pennsylvania Department of Health for facilitating our access to the data. We are grateful to James MacKinnon and seminar participants at Harvard University, Princeton University, Queens University, Tulane University, the University of Maryland, the University of Massachusetts- Amherst, the University of Rome, Uppsala University, the NBER Summer Institute, and the SOLE/EALE 2010 meetings for helpful comments. All opinions and any errors are our own. The views expressed herein are those of the author(s) and do not necessarily reflect the views of the National Bureau of Economic Research.