Concealment mechanism {16b}
Once a patient has been screened and enrolled in the trial, the ambulance staff will fill out the registration form as described above. In the registration form, the paramedic will annotate the following information about the patient: (1) civil registration number, (2) the number of the study medicine box, (3) time of intervention, and (4) if the study medicine was given according to the protocol (yes/no), and if not, why the study medicine was not given. The ambulance staff in the ambulance will sign the registration form following inclusion. Once a registration form has been filled out, the investigators of the trial will be notified by e-mail. The box serial number will also be available in the pre-hospital journal (photo and written note) and/or the delivery of the used study medicine box at the department at Rigshospitalet.