?url_ver=Z39.88-2004&rft_id=doi%3A10.1038%2Fs43856-025-01020-4&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=L%C3%B3pez-Izquierdo%2C+Ra%C3%BAl&rft.aulast=L%C3%B3pez-Izquierdo&rft.aufirst=Ra%C3%BAl&rft.volume=5&rft.atitle=Association+between+blood+cortisol+levels+and+numerical+rating+scale+in+prehospital+pain+assessment&rft.issue=1&rft.title=Communications+Medicine&rft.issn=2730-664X&rft.date=Julio+2025&rft.genre=article