Churchill Hospital, Oxford, United Kingdom
Norfolk and Norwich University Hospital, Norwich, United Kingdom
Derriford Hospital, Plymouth, United Kingdom
University College London Hospital, London, United Kingdom
Beijing Children Hospital, Beijing, China
University College London Great Ormond Street Institute of Child Health, London, United Kingdom
London North West University Healthcare NHS Trust, Ealing, United Kingdom
Hounslow & Richmond Community Healthcare, Twickenham, United Kingdom
Southern Health Foundation Trust, Southampton, United Kingdom
eHealth Unit, Research Department of Primary Care and Population Health, University College London, London, United Kingdom
University College London, London, UK, United Kingdom
Barts Health NHS Trust, London, United Kingdom
Moorfields Eye Hospital NHS FT, London, United Kingdom