{{Cite journal| doi = 10.4414/smw.2019.20114| issn = 1424-3997 (Electronic) 0036-7672 (Linking)| volume = 149| issue = 29-30| pages = –20114| last1 = Popovic| first1 = M.| last2 = Cesana-Nigro| first2 = N.| last3 = Winzeler| first3 = B.| last4 = Thomann| first4 = R.| last5 = Schutz| first5 = P.| last6 = Muller| first6 = B.| last7 = Christ-Crain| first7 = M.| last8 = Blum| first8 = C. A.| title = Estimation of treatment allocation in a randomised, double-blinded, placebo-controlled trial| journal = Swiss Med Wkly| date = 2019-07-25| pmid = 31340056}}