[Co-pay reduced--free cards for doctor hopping patients].
D003362:Cost-Benefit Analysis / Q000191:economics; D005858:Germany; D006300:Health Services Misuse / Q000191:economics*; D006801:Humans; D009313:National Health Programs / Q000191:economics*; D020414:Risk Sharing, Financial / Q000191:economics*; D013660:Taxes / Q000191:economics*