23 IZA Discussion Papers
IZA Discussion Paper No. 5213
published in: Journal of Health Economics, 2011, 30 (5), 869 - 897
IZA Discussion Paper No. 4593
published in: Health Economics, 2010, Volume 19 (Supplement 1), 107–125
IZA Discussion Paper No. 1056
published in: Quarterly Journal of Economics, 2004, 120 (3), 1003-1030
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