{{Cite journal| doi = 10.57187/s.4502| issn = 1424-3997 (Electronic)| volume = 155| issue = 6| pages = 4502| last1 = Muller| first1 = M.| last2 = Micallef| first2 = P.| last3 = Jud| first3 = S.| last4 = Exadaktylos| first4 = A.| last5 = Jakob| first5 = D. A.| last6 = Pietsch| first6 = U.| last7 = And The Swiss Trauma| first7 = Registry| title = Characteristics of severely injured trauma patients transported by helicopter emergency medical services in Switzerland: a retrospective cohort study| journal = Swiss Med Wkly| date = 2025-08-14| pmid = 40811110}}