{{Cite journal| doi = 10.1186/s13049-025-01419-x| issn = 1757-7241 (Electronic) 1757-7241 (Linking)| volume = 33| issue = 1| pages = 97| last1 = Klocker| first1 = E.| last2 = Wienandts| first2 = L.| last3 = Josi| first3 = D.| last4 = Rauch| first4 = S.| last5 = Albrecht| first5 = R.| last6 = Knapp| first6 = J.| last7 = Pietsch| first7 = U.| title = High-altitude HEMS missions-a retrospective analysis of 3,564 air rescue missions conducted between 2011 and 2021| journal = Scand J Trauma Resusc Emerg Med| date = 2025-05-31| pmid = 40448252}}