Erratum to: The phenotypic spectrum of organic acidurias and urea cycle disorders. Part 1: the initial presentation. Issue 6 (16th June 2015) - Kölker, Stefan; Cazorla, Angeles Garcia; Valayannopoulos, Vassili; Lund, Allan M.; Burlina, Alberto B.; Sykut‐Cegielska, Jolanta; Wijburg, Frits A.; Teles, Elisa Leão; Zeman, Jiri; Dionisi‐Vici, Carlo; Barić, Ivo; Karall, Daniela; et al.