A string of recent celebrity deaths serves as a stark reminder that cardiovascular disease is the No. 1 killer around the world.
원문출처 : http://www.cnn.com/2016/12/26/health/what-is-heart-failure-heart-attack-sudden-cardiac-arrest-explainer/index.html
원문출처 : http://www.cnn.com/2016/12/26/health/what-is-heart-failure-heart-attack-sudden-cardiac-arrest-explainer/index.html