{{Cite journal| doi = 10.1371/journal.pone.0250590| issn = 1932-6203 (Electronic) 1932-6203 (Linking)| volume = 16| issue = 5| pages = –0250590| last1 = Beck| first1 = K.| last2 = Vincent| first2 = A.| last3 = Becker| first3 = C.| last4 = Keller| first4 = A.| last5 = Cam| first5 = H.| last6 = Schaefert| first6 = R.| last7 = Reinhardt| first7 = T.| last8 = Sutter| first8 = R.| last9 = Tisljar| first9 = K.| last10 = Bassetti| first10 = S.| last11 = Schuetz| first11 = P.| last12 = Hunziker| first12 = S.| title = Prevalence and factors associated with psychological burden in COVID-19 patients and their relatives: A prospective observational cohort study| journal = PLoS One| date = 2021-05-06| pmid = 33951085}}