WASHINGTON, Lub Kaum Hli 23, 2011 /PRNewswire-USNewswire/ — Thawj zaug hauv keeb kwm, US Department of State (DOS) tab tom ntsuas cov kev cai thoob ntiaj teb uas yuav txwv tsis pub cov khoom muaj mercury xws li nyiaj / amalgam kho hniav, uas muaj 50% mercury thiab twb nyob rau hauv lub qhov ncauj ntawm ntau tshaj 122 lab Americans.
