The guidelines were updated after three studies showed that the hands-only method was just as effective as traditional CPR.

VOA: special.2009.05.20

Of all the printing forms we have described, silkscreen is the only direct method.

VOA: special.2009.09.02

So far the method purifies only small amounts of water.

VOA: special.2010.04.05

The other method is called "Hands-Only CPR."

VOA: special.2009.08.11