title: RE: Letter to the editor, Dr Cheng et al. "Smartphone apps and secondary prevention after myocardial infarction-How can long-term usage be improved?"
authors.affiliation: Uppsala Clinical Research Center, Uppsala University, Uppsala, Sweden. Electronic address: christoph.varenhorst@ucr.uu.se.
authors.forename: Christoph
authors.initials: C
authors.lastname: Varenhorst
authors.affiliation: Uppsala Clinical Research Center and Department of Medical Sciences, Cardiology, Uppsala University, Uppsala, Sweden.
authors.forename: Nina
authors.initials: N
authors.lastname: Johnston
mesh_terms: D006801:Humans; D063731:Mobile Applications; D009203:Myocardial Infarction; D055502:Secondary Prevention; D000068997:Smartphone