6 IZA Discussion Papers
IZA Discussion Paper No. 17098
IZA Discussion Paper No. 14721
IZA Discussion Paper No. 13636
forthcoming in: Health Policy
IZA Discussion Paper No. 11945
IZA Discussion Paper No. 10684
IZA Discussion Paper No. 6545
published in: American Economic Review, 2014, 104 (7), 2238-2265