1. Hands-Only (Compression-Only) Cardiopulmonary Resuscitation: A Call to Action for Bystander Response to Adults Who Experience Out-of-Hospital Sudden Cardiac Arrest A Science Advisory for the Public From the American Heart Association Emergency Cardiovascular Care Committee Circulation. 2008;117:2162-2167
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9. CPR in early part of the 20th century 2005 CPR guidelines