title: Reply:.
authors.affiliation: Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden. Electronic address: olov.collste@sodersjukhuset.se.
authors.forename: Olov
authors.initials: O
authors.lastname: Collste
authors.affiliation: Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden.
authors.forename: Per
authors.initials: P
authors.lastname: Tornvall
authors.affiliation: Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden.
authors.forename: Mats
authors.initials: M
authors.lastname: Frick
mesh_terms: D025401:Echocardiography, Stress / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D013564:Sympathetic Nervous System / Q000502:physiology*; D054549:Takotsubo Cardiomyopathy / Q000000981:diagnostic imaging* / Q000503:physiopathology*