The participating registries will transfer unprocessed anonymised data. Transmission of aggregated data should be avoided whenever possible; only in case of limitations due to national laws or ethical requirements should a participating registry transmit aggregated data. Every single case requires a data sheet (DS). Data will be collected within the national, regional or local participating registries (either as a computer-based export from the national, regional or local registry or as a paper-based DS. After validation and anonymisation of data by participating registries the data will then be transferred only via the national coordinator (computer-based) to the study centre. National coordinators are responsible for quality control i.e. the completeness reliability and accuracy of the of data, including timely submission of data to the study management group. Every DS will be identified by a unique number, including the country and region of origin. Registries that cannot transfer unprocessed original data due to the reasons mentioned above will collect data themselves. These registries will then send aggregated data to the study centre. Participating registries must collect basic EMS data on the region and population served. This registry-specific information must only be transmitted once during the study period. Data (computer and paper-based) will be handled according to national laws concerning data security; the national coordinator is responsible for maintaining the necessary standards. Access to the data will be protected by username and password.