Clinical Journal of Sport Medicine · 2012 · 40 citations · 15 references
BASE jumpers have an average of 1 severe injury for every 500 jumps. Most active BASE jumpers have witnessed death or severe injury of a participant and have experienced a "close call" incident.
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Risk of Injury Associated With Body Checking Among Youth Ice Hockey Players
Carolyn A. Emery · JAMA · 2010 · 261 citations · Full text
Andrew Nathanson, Shark Bird, Leland Dao et al. · The American Journal of Sports Medicine · 2006 · 115 citations