http://www.helium.com/knowledge/168109-how-to-tell-when-a-cough-is-more-than-a-cold.xml Helium.com > Cold & Flu > How to tell when a cough is more than a cold en-us Copyright Helium.com Wed, 28 May 2008 21:24:56 GMT Wed, 28 May 2008 21:24:56 GMT