1 Metabolic and Muscular Unit, Regional Reference Centre Expanded Newborn Screening, Meyer Children Hospital, Florence, Italy.
2 Department of Pediatrics, Ospedale Regina Margherita, P.zza Polonia, 94, 10126, Torino, Italy.
3 Division of Inherited Metabolic Diseases, Regional Center for Expanded Neonatal Screening, Department of Women and Children's Health, University Hospital of Padova, Via Orus 2/B, 35129, Padova, Italy.
4 Division of Inherited Metabolic Diseases, Regional Center for Expanded Neonatal Screening, Department of Women and Children's Health, University Hospital of Padova, Via Orus 2/B, 35129, Padova, Italy. alberto.burlina@unipd.it.
The original article contains an unintended omission of a statement of competing interests. As such, the authors would like to declare the following complete statement of competing interests.