Corrigendum: High Presence of Extracellular Hemoglobin in the Periventricular White Matter Following Preterm Intraventricular Hemorrhage - Ley, David; Romantsik, Olga; Vallius, Suvi; Sveinsdóttir, Kristbjörg; Sveinsdóttir, Snjolaug; Agyemang, Alex A.; Baumgarten, Maria; Mörgelin, Matthias; Lutay, Nataliya; Bruschettini, Matteo; Holmqvist, Bo; Gram, Magnus (Frontiers in Physiology, 2020)