1 European Respiratory Society, Lausanne, Switzerland.
2 Institute for Evidence in Medicine, Medical Center - University of Freiburg, Freiburg, Germany.
3 Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland.
4 Dept of Pulmonology, Cochin Hospital, Assistance Publique - Hôpitaux de Paris (AP-HP) Centre, Université de Paris, Paris, France.
5 Université Paris-Saclay, INSERM, AP-HP, Service de Pneumologie et Soins Intensifs Respiratoires, Hôpital Bicêtre, Le Kremlin Bicêtre, France.
6 Dept of Respiratory Sciences, University of Leicester, Leicester, UK.
7 Dept of Pneumology, Coimbra University Hospital, Coimbra, Portugal.
8 Dept of Paediatric Respiratory Medicine, Imperial Centre for Paediatrics and Child Health, National Heart and Lung Institute, Imperial College and Royal Brompton Hospital, London, UK.
ERS has published official methodological guidance for clinical practice guidelines. ERS recommends this to ensure that state-of-the-art guidelines are developed. https://bit.ly/3xP5SSr.