There is a risk that giving a patient a strong blood thinner during a stroke can cause bleeding inside the brain.

VOA: special.2009.09.22

Their central nervous system may tell the brain that there is pain even when there is no cause for the pain.

VOA: special.2011.07.26

At the time that Miss Jordan left Congress, there were widespread reports that failing health was the cause for her decision.

VOA: special.2010.05.09

There also was the danger that fighting would cause slave states still in the Union to secede and join the southern Confederacy.

VOA: special.2009.08.06

Studies support the theory that there are several causes, instead of a single environmental cause or genetic problem.

VOA: special.2009.01.06

"After many years of trying to figure out what is going on with the genetic cause of depression, we're still not there yet."

VOA: special.2009.06.24

There is debate over whether releasing too much information might cause more harm than good.

VOA: special.2009.04.17

Experts here in Seoul generally view the short-range launches as routine, and say there is no serious cause for alarm.

VOA: standard.2009.10.13

Macpherson says there is also no way of knowing whether there could be another eruption that could cause a similar ash cloud.

VOA: standard.2010.04.15

These basic principles are important," Dr.Pappas emphasizes that, while there is no cause for alarm, countries where health care infrastructure is weak are the most vulnerable.

VOA: standard.2009.04.28

"There may be either a new cause for gastric cancer in that population or perhaps some difference in their Helicobactor Pylori infection that's contributing to a new risk for gastric cancer."

VOA: standard.2010.05.12