British Journal of Sports Medicine
https://bjsm.bmj.com/content/49/2/88.short
BCIRPU
http://mediasite.phsa.ca/mediasite/Play/78d26b9779464a48a0bddf2e0b3aaf661d
BC Injury Research and Prevention Unit (BCIRPU)
https://open.library.ubc.ca/media/stream/pdf/52383/1.0400223/3
Journal of the American Medical Association (JAMA)
http://jamanetwork.com/journals/jama/fullarticle/2593568
Alexandra's Playground
https://www.youtube.com/watch?v=DJ2LmEYB_JQ