European Resuscitation Council Guidelines 2021: Adult advanced life support

North Bristol NHS Trust, Southmead Hospital, University Hospital Cologne, Hôpital Necker-Enfants Malades, Assistance Publique – Hôpitaux de Paris, Université Paris Cité, University Hospitals Birmingham NHS Foundation Trust, University of Warwick, University Hospital Southampton NHS Foundation Trust, South Western Ambulance Service NHS Foundation Trust, Karolinska University Hospital, Karolinska Institutet, Johannes Gutenberg University Mainz, University Medical Center of the Johannes Gutenberg University Mainz, University of Oslo, Oslo University Hospital, Paracelsus Medical University, Azienda Unità Sanitaria Locale di Ferrara, Agostino Gemelli University Polyclinic, Università Cattolica del Sacro Cuore, Istituti di Ricovero e Cura a Carattere Scientifico, Warwick Hospital, Royal United Hospital