One reason, he said, was that doctors had tended not to recommend the test.

Generally, the good doctors tend to sign with the plans whose compensation they think is best.

As a result, doctors and nurses tend to break the law in certain circumstances.

In Japan, doctors sell the drugs themselves and tend to make much of their income from them.

"Doctors and their patients tend to view heart disease as a plumbing problem," he says.

The doctors who participate tend to be young or have recently joined the hospital staff and are building practices.

"Let me take you where it's warm and the ship's doctor can tend your injuries."

She wakes in a hospital, where a doctor named Simon tends her.

Giving doctors such information tends to hold down costs.

Also, doctors have tended not to consider whether the benefit of tests justified the costs.