{{Cite journal| doi = 10.1186/s12873-021-00531-2| issn = 1471-227X (Electronic) 1471-227X (Linking)| volume = 21| issue = 1| pages = 133| last1 = Birrenbach| first1 = T.| last2 = Geissbuhler| first2 = A.| last3 = Exadaktylos| first3 = A. K.| last4 = Hautz| first4 = W. E.| last5 = Sauter| first5 = T. C.| last6 = Muller| first6 = M.| title = A dangerously underrated entity? Non-specific complaints at emergency department presentation are associated with utilisation of less diagnostic resources| journal = BMC Emerg Med| date = 2021-11-12| pmid = 34758749}}