title: Letter by Stuehlinger et al regarding article, "Metabolic profiling of arginine and nitric oxide pathways predicts hemodynamic abnormalities and mortality in patients with cardiogenic shock after acute myocardial infarction".
authors.forename: Markus C
authors.initials: MC
authors.lastname: Stuehlinger
authors.forename: Bernhard
authors.initials: B
authors.lastname: Metzler
authors.forename: John P
authors.initials: JP
authors.lastname: Cooke