Correction to: Clinical Research in Cardiology https://doi.org/10.1007/s00392-018-1385-1

Unfortunately, an error occurred in the methods section of the abstract. The corrected text is given below.

Methods We retrospectively analyzed three cohort studies: 383 patients admitted at the Tokyo Medical University hospital, 165 patients admitted at the Centro Hospitalar do Porto and 164 patients admitted at the Nancy University Hospital (ICALOR study). ePVS at admission and at discharge as well as its change thereof were, respectively, calculated using the Duarte and Strauss formulas, both derived from hemoglobin and hematocrit ratios. Clinical variables including physical assessment, biological and echocardiographic parameters were recorded. The clinical outcome was a composite of re-hospitalization for worsening HF or all-cause mortality.

The original article has been corrected.