1 Department of Clinical Neurosciences, UCL Institute of Neurology, UK.
2 NIHR Biomedical Research Centre at Moorfields Eye Hospital NHS Foundation Trust and UCL Institute of Ophthalmology, London, UK; IRCCS-Fondazione GB Bietti, Rome, Italy. Electronic address: gloriaroberti82@gmail.com.
3 NIHR Biomedical Research Centre at Moorfields Eye Hospital NHS Foundation Trust and UCL Institute of Ophthalmology, London, UK.
4 Lysosomal Storage Disorders Unit, Royal Free Hospital, London, UK.
5 Department of Clinical Neurosciences, UCL Institute of Neurology, UK. Electronic address: a.schapira@ucl.ac.uk.