1Physical Medicine and Rehabilitation Unit, IRCCS Instituto Giannina Gaslini, Genoa, Italy.
2Division of Cardiology, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, PA, USA.
3Department of Pediatric Endocrinology, Al Jalila Children's Specialty Hospital, Dubai, UAE.
4Division of Neurology, Department of Pediatrics, University of Utah, Salt Lake City, UT, USA.
5Department of Ophthalmology, Stanford University School of Medicine, Stanford, CA, USA.
6Department of Neurology, Stanford University School of Medicine, Stanford, CA, USA.
7Division of Pediatric Neurology, Division of Stroke, Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
8Genomenon, Inc, Ann Arbor, MI, USA.
9Inozyme Pharma, Boston, MA, USA.
10Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA.
11Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA. sgziegler@jhmi.edu.