title: Reply to letter to the editor by Lou et al.
authors.affiliation: Department of Medicine, Karolinska Institutet, Stockholm, Sweden; Department of Cardiology, Karolinska University Hospital, Stockholm, Sweden. Electronic address: dinos.verouhis@karolinska.se.
authors.forename: Dinos
authors.initials: D
authors.lastname: Verouhis
authors.affiliation: Department of Medicine, Karolinska Institutet, Stockholm, Sweden; Department of Cardiology, Karolinska University Hospital, Stockholm, Sweden.
authors.forename: Peder
authors.initials: P
authors.lastname: Sörensson
authors.affiliation: Department of Medicine, Karolinska Institutet, Stockholm, Sweden; Department of Cardiology, Karolinska University Hospital, Stockholm, Sweden; Research Centre Cardiology, Minsk, Belarus.
authors.forename: Andrey
authors.initials: A
authors.lastname: Gourine
authors.affiliation: Department of Medicine, Karolinska Institutet, Stockholm, Sweden; Department of Cardiology, Karolinska University Hospital, Stockholm, Sweden.
authors.forename: Loghman
authors.initials: L
authors.lastname: Henareh
authors.affiliation: Division of Cardiovascular Medicine, Department of Clinical Sciences, Karolinska Institutet, Danderyd University Hospital, Stockholm, Sweden.
authors.forename: Jonas
authors.initials: J
authors.lastname: Persson
authors.affiliation: Department of Medicine, Karolinska Institutet, Stockholm, Sweden; Department of Cardiology, Karolinska University Hospital, Stockholm, Sweden.
authors.forename: Nawzad
authors.initials: N
authors.lastname: Saleh
authors.affiliation: Department of Medicine, Karolinska Institutet, Stockholm, Sweden; Department of Cardiology, Karolinska University Hospital, Stockholm, Sweden.
authors.forename: Magnus
authors.initials: M
authors.lastname: Settergren
authors.affiliation: Department of Clinical Science and Education, Karolinska Institutet, Södersjukhuset, Stockholm, Sweden.
authors.forename: Martin
authors.initials: M
authors.lastname: Sundqvist
authors.affiliation: Department of Clinical Science and Education, Karolinska Institutet, Södersjukhuset, Stockholm, Sweden.
authors.forename: Per
authors.initials: P
authors.lastname: Tornvall
authors.affiliation: Department of Clinical Science and Education, Karolinska Institutet, Södersjukhuset, Stockholm, Sweden.
authors.forename: Nils
authors.initials: N
authors.lastname: Witt
authors.affiliation: Department of Medicine, Karolinska Institutet, Stockholm, Sweden; Department of Cardiology, Karolinska University Hospital, Stockholm, Sweden.
authors.forename: Felix
authors.initials: F
authors.lastname: Böhm
authors.affiliation: Department of Medicine, Karolinska Institutet, Stockholm, Sweden; Department of Cardiology, Karolinska University Hospital, Stockholm, Sweden.
authors.forename: John
authors.initials: J
authors.lastname: Pernow
mesh_terms: D003097:Collateral Circulation; D003326:Coronary Circulation; D006321:Heart; D006801:Humans; D007511:Ischemia; D000072657:ST Elevation Myocardial Infarction