1. Biomedical Research Institute (IIB Sant Pau) Iberoamerican Cochrane Centre Barcelona Spain
2. Division of Infection, Immunity and Respiratory Medicine, Faculty of Biology, Medicine and Health University of Manchester Manchester UK
3. Department of Public Health, Faculty of Medicine University of Turku Turku Finland
4. Joint Research Centre European Commission Ispra Italy
5. Clinico‐Pharmacological Unit Finnish Medicines Agency Fimea Turku Finland
6. Institute for Epidemiology Social Medicine and Health System Research Hanover Medical School Hannover Germany
7. Health Protection Agency Metropolitan city of Milan Italy
8. CIBER de Epidemiología y Salud Pública (CIBERESP) Barcelona Spain