5 Scientific Activities Dept, European Respiratory Society, Lausanne, Switzerland.
6 Educational Activities Dept, European Respiratory Society, Lausanne, Switzerland.
7 Scientific Activities Dept, European Respiratory Society, Lausanne, Switzerland Iberoamerican Cochrane Centre - Biomedical Research Institute Sant Pau (IIB Sant Pau), Barcelona, Spain.
8 Scientific Activities Dept, European Respiratory Society, Lausanne, Switzerland Institute of Social and Preventive Medicine, University of Bern, Switzerland.
9 Scientific Activities Dept, European Respiratory Society, Lausanne, Switzerland Educational Activities Dept, European Respiratory Society, Lausanne, Switzerland.
10 Depts of Epidemiology and Respiratory Medicine, Erasmus Medical Center, Rotterdam, The Netherlands Dept of Respiratory Medicine, Ghent University Hospital, Ghent, Belgium.
11 Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton General Hospital, Southampton, UK.