An average of 30% of twenty-six thousand parents surveyed independently 
report that their child experienced some improvement from pharmaceutical 
drugs.  There are no reports of cures from such treatment.  Another 30% of 
children become worse with drug treatments.  Drug therapy clearly is of 
little value.
Yet, 74% of parents report chelation has improved their child.  Only 3% 
reported a worsening of the child's condition from chelation.  Clearly 
chelation has a far better track record than pharmaceutical interventions.
Read More: http://mcs-america.org/October2008pg3637.pdf