{{Cite journal| doi = 10.1136/emermed-2019-208643| issn = 1472-0213 (Electronic) 1472-0205 (Linking)| volume = 39| issue = 12| pages = 931–936| last1 = Lehmann| first1 = B.| last2 = Koeferli| first2 = U.| last3 = Sauter| first3 = T. C.| last4 = Exadaktylos| first4 = A.| last5 = Hautz| first5 = W. E.| title = Diagnostic accuracy of a pragmatic, ultrasound-based approach to adult patients with suspected acute appendicitis in the ED| journal = Emerg Med J| date = 2022-03-19| pmid = 35301219}}