Funding for this research was provided by:
University College London
National Institute for Health Research Biomedical Research Centre
Received: 29 March 2018
Revised: 15 June 2018
Accepted: 26 June 2018
First Online: 30 August 2018
Change Date: 19 November 2018
Change Type: Correction
Change Details: Due to a typesetting error the wrong Table 2 was used. The correct Table 2 is shown here:
Compliance with ethical standards
: We report no specific funding sources and/or potential conflicts of interest from each author that relate to the research covered in the article. No specific funding was received for the conduction of this study.Dr. Apostolos Papandreou currently holds a joint Action Medical Research/British Paediatric Neurology Association Research Training Fellowship and has also previously received funds from Actelion and the NBIA Disorders Association.Dr. Joanne Ng receives funding from the MRC (MR/K02342X/1, MR/R015325/1), Great Ormond Street Children’s Charities (GOSHCC V1284), Rosetrees Trust (M576-F1) and is appointed as a principal scientist with Synpromics Ltd.Dr. Esther Meyer was funded by Great Ormond Street Hospital Children’s Charities and NBIA Disorders Association.Prof Simon JR Heales is in receipt of funding from the European Union (Marie Curie Training Network, Training in Neurodegeneration, Therapeutics Intervention and Neurorepair).Dr. Manju A Kurian is funded by a Wellcome Trust Intermediate Clinical Fellowship and has recently been appointed to a National Institute for Health Research (NIHR) Professorship. She receives funding from Great Ormond Street Children’s Charity and the Rosetrees Trust.Prof Rahman, Drs Fratter, Carr, Champion and Clarke, Prof Gissen, Drs Hemingway, Hussain and Jayawant, Prof King, Drs Lynch, Mewasingh, Patel, Prabhakar, Neergheen and Pope and Prof Poulton declare that they have no conflict of interest.
: All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2000. This study was undertaken through anonymised retrospective data collection and no patient-identifiable information is included in the article.
: This article does not contain any studies on animal subjects.