But we do not have experience of their long-term effectiveness in this fairly uncontrolled environment.
However, long-term monitoring would be required to demonstrate and ensure their long-term effectiveness.
However, development of drug resistance is a major limitation to their long-term effectiveness.
Clays are potentially a low-cost barrier to Cs movement, though their long-term effectiveness remains untested.
While weight-management interventions are effective in attenuating antipsychotic-induced weight, there is no available evidence on their long-term effectiveness.
What happened next provides a glimpse into the sometimes contentious world of medical testing and the federal rules that allow device makers to market new products with little or no data about their long-term effectiveness or safety.
And over the last decade, the number of prescriptions for the strongest opioids has increased nearly fourfold, with only limited evidence of their long-term effectiveness or risks, federal data shows.
Increasing the number of these small, inexpensive and low-maintenance wetlands in the agricultural landscape would reduce the level of water pollution whilst preserving the extent of cultivated land, but their long-term effectiveness should be evaluated.
