The study found that heart attack admissions have continued to fall.
VOA: special.2009.01.07
"And that short,few-hour exposure is able to trigger a heart attack where they might not have had it for days or months,or never."
VOA: standard.2010.08.04
Researchers at the University of Michigan found that if people living in poor neighborhoods received CPR instruction, heart attack victims there would have a better chance of survival.
VOA: standard.2010.06.04
应用推荐