iii Lisette Kunz Haaglanden Medical Center The Hague, The Netherlands l.kunz@haaglandenmc.nl Questions 24, 29, 41, 96 and 114 Yvonne Nussbaumer Department of Internal Medicine and Pulmonary Medicine, Spitäler Schaffhausen Schaffhausen, Switzerland yvonne.nussbaumer@spitaeler-sh.ch Questions 26, 34, 71, 75, 80 and 89 Alexis Papadopoulos MedCare Clinic Nicosia, Cyprus drpapadopoulosa@gmail.com Questions 31, 84, 110 and 112 Andriana I. Papaioannou 1st Respiratory Medicine Department, National and Kapodistrian University of Athens, Sotiria Chest Hospital Athens, Greece papaioannouandriana@gmail.com Questions 15, 21, 49, 93 and 103 Winfried Randerath Bethanien Hospital, Clinic of Pneumology and Allergology, Center for Sleep Medicine and Respiratory Care, and Institute of Pneumologie at the University of Cologne Cologne, Germany randerath@klinik-bethanien.de Questions 2, 12, 22, 48, 54, 64, 69, 72, 107 Anthony E. Redington East and North Hertfordshire NHS Trust, Lister Hospital Stevenage, UK redingtonae@gmail.com Questions 1, 55, 66 and 78 Christine Rüegg Department of Internal Medicine and Pulmonary Medicine, Spitäler Schaffhausen Schaffhausen, Switzerland Christine.Rueegg@usz.ch Questions 7, 9, 33, 39, 60, 76, 92, 99, 105 and 108 Szymon Skoczyński Department of Pneumonology, Faculty of Medical Sciences in Katowice, Medical University of Silesia Katowice, Poland simon.mds@poczta.fm Question 3 Guillermo Suárez-Cuartín Respiratory Department, Bellvitge University Hospital and Bellvitge Biomedical Research Institute Barcelona, Spain gsuarezc@bellvitgehospital.cat Questions 4, 6, 8, 17, 50, 70, 79, 81, 86 and 95 Silvia Ulrich Department of Pulmonology, University and University Hospital of Zurich Zurich, Switzerland silvia.ulrich@usz.ch Questions 14, 19, 23, 42, 63, 73, 83, 91, 98 and 110