“…To review the existing knowledge about emergency response, we started to look for the best evidence from research and performed systematic reviews on some aspects of regulation, procedures, and training in first aid, including effectiveness of automated external defibrillators in workplaces ( 6 , 7 ). Considering the publication bias taking into account few countries that published and evaluate their own procedures ( 8 – 12 ), we have sought for sources of clinical expertise and experience, including field actors ( 13 , 14 ).…”