Imperial College London - Department of Primary Care and Public Health, Imperial College London - Department of Primary Care and Public Health, Imperial College London - Department of Primary Care and Public Health, Imperial College London - Imperial NIHR Patient Safety Translational Research Centre, University College Dublin (UCD), Imperial College London - Department of Primary Care and Public Health, Leeds Teaching Hospitals NHS Trust, Hywel Dda University Health Board, Government of the United Kingdom - Glasgow Royal Infirmary, Oxford University Hospitals NHS Foundation Trust, Leeds Children’s Hospital, Wheaton Hall Medical Practice, Croydon Health Services, Evercare Hospital, Croydon Health Services, University Hospital of Tübingen, Imperial College London - Department of Primary Care and Public Health, University of Limerick, Mohammed Bin Rashid University of Medicine and Health Sciences, NHS Forth Valley, Leiden University - Leiden University Medical Center (LUMC), University Hospital for Infectious Diseases "Dr. Fran Mihaljevic", Medical Research Council Unit The Gambia at London School of Hygiene & Tropical Medicine, West Hertfordshire Teaching Hospitals NHS Trust, University of Amsterdam - Department of Internal Medicine, Nnamdi Azikiwe University, Nanyang Technological University (NTU), Leeds Teaching Hospitals NHS Trust and Imperial College London - Department of Primary Care and Public Health