Erratum to: Longitudinal volumetric and 2D assessment of cerebellar atrophy in a large cohort of children with phosphomannomutase deficiency (PMM2‐CDG). Issue 5 (9th June 2017) - de Diego, Víctor; Martínez‐Monseny, Antonio F.; Muchart, Jordi; Cuadras, Daniel; Montero, Raquel; Artuch, Rafael; Pérez‐Cerdá, Celia; Pérez, Belén; Pérez‐Dueñas, Belén; Poretti, Andrea; Serrano, Mercedes