3 IZA Discussion Papers
IZA Discussion Paper No. 9142
published in: Health Economics, 2016, 25 (10), 1326-40.
IZA Discussion Paper No. 5762
published in: Canadian Journal of Economics, 2013, 46 (1), 208-238
IZA Discussion Paper No. 4862
published in: Journal of Health Economics, 2011, 30 (1), 99-111