66 IZA Discussion Papers
IZA Discussion Paper No. 2841
IZA Discussion Paper No. 2689
published in: Health Care Management Science, 2008, 11 (4), 373-381
IZA Discussion Paper No. 2520
IZA Discussion Paper No. 1154
published in: Journal of Health Economics, 2005, 24 (5), 969-989
IZA Discussion Paper No. 22
IZA Discussion Paper No. 22