Erratum to: Analysis, identification and visualization of subgroups in genomics. - Völkel, Gunnar; Laban, Simon; Fürstberger, Axel; Kühlwein, Silke D; Ikonomi, Nensi; Hoffmann, Thomas K; Brunner, Cornelia; Neuberg, Donna S; Gaidzik, Verena; Döhner, Hartmut; Kraus, Johann M; Kestler, Hans A (Briefings in Bioinformatics, 2021)