?url_ver=Z39.88-2004&rft_id=doi%3A10.1136%2Fbmjopen-2023-078815&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=del+Pozo+Vegas&rft.aufirst=Carlos&rft.au=del+Pozo+Vegas%2C+Carlos&rft.pages=e078815&rft.atitle=Prehospital+acute+life-threatening+cardiovascular+disease+in+elderly%3A+an+observational%2C+prospective%2C+multicentre%2C+ambulance-based+cohort+study&rft.title=BMJ+Open&rft.volume=13&rft.issue=11&rft.date=Noviembre+2023&rft.issn=2044-6055&rft.genre=article