{{Cite journal| doi = 10.4414/smw.2021.20543| issn = 1424-3997 (Electronic) 0036-7672 (Linking)| volume = 151| issue = 29-30| pages = –20543| last1 = Mettler| first1 = A. C.| last2 = Piazza| first2 = L.| last3 = Michel| first3 = J.| last4 = Muller| first4 = M.| last5 = Exadaktylos| first5 = A. K.| last6 = Hautz| first6 = W. E.| last7 = Sauter| first7 = T. C.| title = Use of telehealth and outcomes before a visit to the emergency department: a cross-sectional study on walk-in patients in Switzerland| journal = Swiss Med Wkly| date = 2021-07-29| pmid = 34319582}}