External validation of the simple NULL-PLEASE clinical score in predicting outcomes of out-of-hospital cardiac arrest in the Danish population – A nationwide registry-based study

Christina Byrne, Carlo Alberto Barcella, Maria Lukács Krogager, Manan Pareek, Kristian Bundgaard Ringgren, Mikkel Porsborg Andersen, Elisabeth Helen Anna Mills, Mads Wissenberg, Fredrik Folke, Gunnar Gislason, Lars Køber, Freddy Lippert, Jesper Kjærgaard, Christian Hassager, Christian Torp‐Pedersen, Kristian Kragholm, Gregory Y.H. Lip