Erratum to: Review and evaluation of the methodological quality of the existing guidelines and recommendations for inherited neurometabolic disorders oleh Linda Cassis, Elisenda Cortès-Saladelafont, Marta Molero-Luis, Delia Yubero, Maria Julieta González, Aida Ormazábal, Carme Fons, Cristina Jou, Cristina Sierra, Esperanza Castejon Ponce, Federico Ramos, Judith Armstrong, M. Mar O’Callaghan, Mercedes Casado, Raquel Montero, Silvia Meavilla-Olivas, Rafael Artuch, Ivo Barić, Franco Bartoloni, Cinzia Maria Bellettato, Fedele Bonifazi, Adriana Ceci, Ljerka Cvitanović-Šojat, Christine I. Dali, Francesca D’Avanzo, Ksenija Fumic, Viviana Giannuzzi, Christina Lampe, Maurizio Scarpa, Ángels Garcia-Cazorla