«Poor Sleep Associated with Increased Risk of Heart Attack and Stroke,» European Society of Cardiology press release, June 15, 2015, .
64
Lars Erik Laugsand, Linn B. Strand, Lars J. Vat-ten, Imre Janszky, and Johan Håkon Bjørngaard, «Insomnia Symptoms and Risk for Unintentional Fatal Injuries – The HUNT Study,» SLEEP 37 (2014): 1777–86.