Correction to: Clinical recommendations for cardiovascular magnetic resonance mapping of T1, T2, T2* and extracellular volume: a consensus statement by the Society for Cardiovascular Magnetic Resonance (SCMR) endorsed by the European Association for Cardiovascular Imaging (EACVI) - Messroghli, Daniel; Große-Wortmann, Lars; Friedrich, Matthias (BioMed Central, 2018)