{{Cite journal| doi = 10.1007/s00068-024-02743-0| issn = 1863-9941 (Electronic) 1863-9933 (Linking)| volume = 51| issue = 1| pages = 50| last1 = Yamaguchi| first1 = K.| last2 = Takahashi| first2 = K.| last3 = Jakob| first3 = D. A.| last4 = Abe| first4 = T.| last5 = Matsushima| first5 = K.| last6 = Demetriades| first6 = D.| title = Pre-injury narcotic drug use in isolated severe traumatic brain injury: effect on outcomes| journal = Eur J Trauma Emerg Surg| date = 2025-01-25| pmid = 39856368}}