The effectiveness of medical and vocational interventions for reducing sick leave of self-employed workers / Stijn Baert (Ghent University, University of Antwerp, Université catholique de Louvain and IZA), Bas van der Klaauw (VU University Amsterdam, Tinbergen Institute, CEPR and IZA), Gijsbert van Lomwel (UWV). Bonn : IZA, January 2016
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