Fig. 3From: A national multi centre pre-hospital ECPR stepped wedge study; design and rationale of the ON-SCENE studySchematic timetable of the stepped-wedge study design. ECPR experienced personnel and non-ECPR experienced personnel). HEMS: Helicopter Emergency Medical Service. CCPR: HEMS operating without ECMO: Conventional CardioPuImonary Resuscitation. ECPR: HEMS operating with ECMO: Extra-Corporeal CardioPulmonary Resuscitation Training: Timing training of HEMS personnelBack to article page