Long-term effects of the drug on children are not yet known.
Little is known about the long-term effects of its use.
Including the long-term effects of having too much done for them.
However, further research is still needed into all the long-term effects.
Such steps are likely to have a small long-term effect.
Other potential long-term effects won't be known until the drugs have been used by patients for many years.
It was not known what the long-term effects of taking the drug would be.
What can you tell us about it, and its long-term effect in the region?
More important than that, she said, is the potential long-term effect of the increased attention brought by the Open.
What long-term effect any of this will have remains to be seen.