Recently, researchers at the University of Colorado School of Medicine found that the effects of the surgery may not be long-lasting.

VOA: special.2011.07.05

But she says the research does show the need to study whether or not there are long-lasting effects of repeated exposure over several years.

VOA: special.2011.03.02

She says Washington is delivering on President Obama's promises by helping local communities develop long-lasting solutions and not by focusing on one-time projects.

VOA: standard.2009.11.03

"We need to rule out that there is a not long-lasting effect in healthy people, " Volkow said.

CNN: Cell phone exposure increases brain cell activity

It is a temporary one-time gimmick, not a long-lasting tonic for the recovery.

BBC: Ford vehicles at a Michigan plant

Draghi re-financing operations are more a band-aid than a fire hose, providing temporary support but not a long-lasting solution.

FORBES: ECB's Liquidity Injection Doesn't Justify This Rally, Could Derail It