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 2012.

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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 2012.

Although There Does Not Appear to Be Significant Risk Associated