title: RETRACTED: Ivabradine as adjuvant treatment for chronic heart failure.
abstract: This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal).
  
  This article has been retracted at the request of editors as it is contains multiple serious errors in the data of its primary end-point that make its conclusions unreliable. For example, in Figure 4, the cardiovascular death rates cited from Fox 2008 and Swedberg 2010 are incorrect.
  
  K. Fox, et al. Lancet, 372 (2008), pp. 807–816; K. Swedberg et al. Lancet, 376 (2010), pp. 875–885.
authors.affiliation: Department of Medicine, Urgency Medicine and Evidence Based Medicine, Federal University of São Paulo, São Paulo, Brazil. Electronic address: carolina.mizzaci@hotmail.com.
authors.forename: Carolina C
authors.initials: CC
authors.lastname: Mizzaci
authors.affiliation: Department of Medicine, Urgency Medicine and Evidence Based Medicine, Federal University of São Paulo, São Paulo, Brazil.
authors.forename: Gustavo J M
authors.initials: GJM
authors.lastname: Porfírio
authors.affiliation: Department of Medicine, Urgency Medicine and Evidence Based Medicine, Federal University of São Paulo, São Paulo, Brazil.
authors.forename: André T
authors.initials: AT
authors.lastname: Vilela
authors.affiliation: Cardiovascular Surgery, Federal University of São Paulo, São Paulo, Brazil.
authors.forename: José Cícero S
authors.initials: JCS
authors.lastname: Guillhen
authors.affiliation: Department of Medicine, Urgency Medicine and Evidence Based Medicine, Federal University of São Paulo, São Paulo, Brazil.
authors.forename: Rachel
authors.initials: R
authors.lastname: Riera
keywords: Chronic heart failure; Ivabradine; Randomized controlled trials; Systolic heart failure