Ogawa T, Akahane M, Koike S, Tanabe S, Mizoguchi T, Imamura T:Outcomes of chest compression only CPR versus conventional CPR conducted by lay people in patients with out of hospital cardiopulmonary arrest witnessed by bystanders: nationwide population based observational study.BMJ. 2011 Jan 27;342:c7106. 久保山一敏

Ogawa T, Akahane M, Koike S, Tanabe S, Mizoguchi T, Imamura T:Outcomes of chest compression only CPR versus conventional CPR conducted by lay people in patients with out of hospital cardiopulmonary arrest witnessed by bystanders: nationwide population based observational study.BMJ. 2011 Jan 27;342:c7106. 

久保山一敏