affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Royal Free Hospital, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, University of Southampton - Coronary Research Group, affiliation not provided to SSRN, affiliation not provided to SSRN, Leeds General Infirmary, affiliation not provided to SSRN, affiliation not provided to SSRN, Medical University of Gdańsk, University of Gdansk, affiliation not provided to SSRN, University of Bristol - Bristol Heart Institute, University of Minnesota, affiliation not provided to SSRN, affiliation not provided to SSRN, London Ambulance Service NHS Trust, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, King’s College London - Institute of Psychiatry, Psychology and Neuroscience and affiliation not provided to SSRN