%0 Journal Article %T Extreme sacrifice: sudden cardiac death in the US Fire Service %A Denise L Smith %A David A Barr %A Stefanos N Kales %J Extreme Physiology & Medicine %D 2013 %I BioMed Central %R 10.1186/2046-7648-2-6 %U http://www.extremephysiolmed.com/content/2/1/6/abstract