Public and private provision
However, in the health care sector, we have a particular feature that extends the scope of mixed markets. Even when the funding institution is private (say, a sickness fund or an insurance company), it is often the case that it defines sets of preferential providers. Not all providers are equal. Special relationships between the funding institution and the health care provider started in the context of managed care. The active role of funding institutions relative to health care providers is now a widespread phenomenon, making it non-exclusive to countries with a national health service.