In fiscal decent system it is main means of competition bitewing local governments to offer high-quality public goods.

分权财政下提供优质公共品是地方间竞争的主要手段。

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The researchers found that people who had had a meningioma were more than twice as likely as those who had not to have had at least one bitewing X-ray.

ECONOMIST: Confirmation that dental X-rays can be bad for you

Moreover, guidelines from the American Dental Association state that healthy adults should have a bitewing X-ray no more than once every two or three years, and that there is little reason to X-ray patients who do not have symptoms.

ECONOMIST: Confirmation that dental X-rays can be bad for you