title: Overcoming frustration about neutral clinical studies in cardiopulmonary resuscitation.
authors.forename: Janett
authors.initials: J
authors.lastname: Kreutziger
authors.forename: Volker
authors.initials: V
authors.lastname: Wenzel
mesh_terms: D016887:Cardiopulmonary Resuscitation; D002986:Clinical Trials as Topic; D004632:Emergency Medical Services / Q000458:organization & administration*; D006323:Heart Arrest / Q000628:therapy*; D006801:Humans