{{Cite journal| doi = 10.1016/j.ejim.2018.04.008| issn = 1879-0828 (Electronic) 0953-6205 (Linking)| volume = 54| pages = 46–52| last1 = Muller| first1 = M.| last2 = Schefold| first2 = J. C.| last3 = Guignard| first3 = V.| last4 = Exadaktylos| first4 = A. K.| last5 = Pfortmueller| first5 = C. A.| title = Hyponatraemia is independently associated with in-hospital mortality in patients with pneumonia| journal = Eur J Intern Med| date = 2018-04-17| pmid = 29657106}}