http://www.helium.com/knowledge/268117-how-to-tell-if-youre-having-a-heart-attack.xml Helium.com > Heart Disease & Heart Attack > How to tell if you're having a heart attack en-us Copyright Helium.com Sun, 23 Aug 2009 05:29:36 GMT Sun, 23 Aug 2009 05:29:36 GMT