Developing an Utstein-style Danish Drowning Registry: Nationwide Fatal and Nonfatal Drowning Data Since 2016

Inclusion Criteria: * Drowning * Being registered in the Danish Prehospital Drowning Data with a valid civil registration number to allow for linkage with the inhospital electronic medical records Exclusion Criteria: * Obvious signs of irreversible death (decapitation, decomposition, post-mortem lividity, post-mortem rigidity). * Declared dead on scene. * A valid Do-Not-Attempt-Resuscitation order or other code status orders limiting life-sustaining therapies. * An invalid civil registration number.