Although there does not appear to be significant risk associated with ________, and there is little definitive evidence to support its effectiveness, approximately $2.9 billion was spent on these treatments in 2007.

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The Answer of Although there does not appear to be significant risk associated with ________, and there is little definitive evidence to support its effectiveness, approximately $2.9 billion was spent on these treatments in 2007.

Although There Does Not Appear to Be Significant Risk Associated