Imperial College London, King’s College London, University College London - Patient-Led Research Collaborative, Otto von Guericke University Magdeburg - Institute of Social Medicine and Health Systems Research, Imperial College London, affiliation not provided to SSRN, World Health Organization (WHO) - Department of Country Readiness Strengthening, University of Liverpool, University of Liverpool, affiliation not provided to SSRN, University of Oxford - Nuffield Department of Medicine, affiliation not provided to SSRN, Cambridge University Hospitals - MRCP, World Health Organization (WHO) - Brain Health Unit, affiliation not provided to SSRN, Independent, Coventry University, affiliation not provided to SSRN, Johns Hopkins University - Outcomes After Critical Illness and Surgery (OACIS) Research Group, University of Liverpool and Independent

Russian Academy of National Economy and Public Administration under the President of the Russian Federation (RANEPA) - Laboratory of Health Economics, I.M. Sechenov First Moscow State Medical University - Department of Paediatrics and Paediatric Infectious Diseases, I.M. Sechenov First Moscow State Medical University - Department of Paediatrics and Paediatric Infectious Diseases, I.M. Sechenov First Moscow State Medical University - Department of Paediatrics and Paediatric Infectious Diseases, I.M. Sechenov First Moscow State Medical University - Department of Paediatrics and Paediatric Infectious Diseases, I.M. Sechenov First Moscow State Medical University - Department of Paediatrics and Paediatric Infectious Diseases, I.M. Sechenov First Moscow State Medical University - Department of Paediatrics and Paediatric Infectious Diseases, I.M. Sechenov First Moscow State Medical University - Department of Paediatrics and Paediatric Infectious Diseases, I.M. Sechenov First Moscow State Medical University - Department of Paediatrics and Paediatric Infectious Diseases, I.M. Sechenov First Moscow State Medical University - Department of Paediatrics and Paediatric Infectious Diseases, I.M. Sechenov First Moscow State Medical University - Department of Paediatrics and Paediatric Infectious Diseases, I.M. Sechenov First Moscow State Medical University - Department of Paediatrics and Paediatric Infectious Diseases, I.M. Sechenov First Moscow State Medical University - Department of Paediatrics and Paediatric Infectious Diseases, I.M. Sechenov First Moscow State Medical University - Department of Paediatrics and Paediatric Infectious Diseases, I.M. Sechenov First Moscow State Medical University - Department of Paediatrics and Paediatric Infectious Diseases, I.M. Sechenov First Moscow State Medical University - Department of Paediatrics and Paediatric Infectious Diseases, I.M. Sechenov First Moscow State Medical University - Department of Paediatrics and Paediatric Infectious Diseases, I.M. Sechenov First Moscow State Medical University - Tareev Clinic of Internal Diseases, I.M. Sechenov First Moscow State Medical University - Clinic of Pulmonology, I.M. Sechenov First Moscow State Medical University - Department of Internal Medicine №1, Moscow Research and Clinical Center for Neuropsychiatry, I.M. Sechenov First Moscow State Medical University - Department of Paediatrics and Paediatric Infectious Diseases, I.M. Sechenov First Moscow State Medical University - Department of Clinical Immunology and Allergology, University of Pisa - Department of Clinical and Experimental Medicine, Otto von Guericke University Magdeburg - Institute of Social Medicine and Health Systems Research, University of Leipzig - Pediatric Epidemiology, Universidad de la Sabana, University of Amsterdam - Department of Pediatric Pulmonology, I.M. Sechenov First Moscow State Medical University, I.M. Sechenov First Moscow State Medical University, I.M. Sechenov First Moscow State Medical University - World-Class Research Center, Government of the Russian Federation - Russian Medical Academy of Continuous Professional Education, ZA Bashlyaeva Children's Municipal Clinical Hospital, Government of the Russian Federation - Russian Medical Academy of Continuous Professional Education, N. I. Pirogov Russian National Research Medical University (RSMU), I.M. Sechenov First Moscow State Medical University - Department of Paediatrics and Paediatric Infectious Diseases, I.M. Sechenov First Moscow State Medical University - Department of Paediatrics and Paediatric Infectious Diseases, University of Oxford - Nuffield Department of Medicine, University of Oxford - International Severe Acute Respiratory and Emerging Infections Consortium (ISARIC), MRC-University of Glasgow Centre for Virus Research, University of Colorado at Denver - Department of Pediatrics, Fondazione Policlinico Universitario A. Gemelli IRCCS - Department of Woman and Child Health and Public Health, University of Liverpool - Health Protection Research Unit in Emerging and Zoonotic Infections, Imperial College London - Inflammation, Repair and Development Section, University of Oxford - Nuffield Department of Medicine, Johns Hopkins University - Outcomes After Critical Illness and Surgery (OACIS) Research Group, I.M. Sechenov First Moscow State Medical University, I.M. Sechenov First Moscow State Medical University, N. I. Pirogov Russian National Research Medical University (RSMU), Imperial College London and affiliation not provided to SSRN

affiliation not provided to SSRN, VU University Amsterdam, Vrije Universiteit Amsterdam - Department of Clinical, Neuro and Developmental Psychology, Otto von Guericke University Magdeburg - Institute of Social Medicine and Health Systems Research, affiliation not provided to SSRN, Vrije Universiteit Amsterdam - Department of Clinical, Neuro and Developmental Psychology, affiliation not provided to SSRN and Technische Universität München (TUM)