1 Department of Pediatrics, Division of Medical Genetics, McGill University Health Center, Montreal, Canada.
2 Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), University of Genoa, Italy; Unit of Medical Genetics, IRCCS Istituto Giannina Gaslini, Genoa, Italy. Electronic address: federicozara@gaslini.org.
3 Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), University of Genoa, Italy; Pediatric Neurology and Muscular Diseases Unit, IRCCS Istituto Giannina Gaslini, Genoa, Italy.