[20] S. Gress, A. Focke, F. Hessel, and J. Wasem, Financial incentives for disease management programmes and integrated care in German social health insurance., Health policy (Amsterdam, Netherlands), vol. 78, no. 2-3, pp. 295-305, Oct. 2006. [21] S. Gress, P. Groenewegen, J. Kerssens, B. Braun, and J. Wasem, Free choice of sickness funds in regulated competition: evidence from Germany and The Netherlands., Health policy, vol. 60, no. 3, pp. 235-54, Jun. 2002. [22] D. Grijpstra, S. Broek, B.-J.
44-55, 2001. [20] S. Gress, A. Focke, F. Hessel, and J. Wasem, Financial incentives for disease management programmes and integrated care in German social health insurance., Health policy (Amsterdam, Netherlands), vol.
