{{Cite journal| doi = 10.1007/s00508-019-01596-7| issn = 1613-7671 (Electronic) 0043-5325 (Linking)| volume = 133| issue = 5-6| pages = 229–233| last1 = Lindner| first1 = G.| last2 = Woitok| first2 = B. K.| title = Emergency department overcrowding : Analysis and strategies to manage an international phenomenon| journal = Wien Klin Wochenschr| date = 2020-01-15| pmid = 31932966}}