Pongdhep Theerawit Ramathibodi Hospital, Mahidol University, Bangkok, Thailand pongdhep@yahoo.com Erik H.F.M. van der Heijden Dept of Pulmonary Diseases, Radboud University Medical Centre Nijmegen, Nijmegen, The Netherlands Erik.vanderheijden@radboudumc.nl Maria Vargas Dept of Neuroscience and Reproductive and Odontostomatological Sciences, University of Naples “Federico II”, Naples, Italy vargas.maria82@gmail.com Peter J. Wijkstra Department of Pulmonology/Home Mechanical Ventilation, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands p.j.wijkstra@umcg.nl João C. Winck Pulmonology Dept, Center for Health Technology and Services Research – CINTESIS (Centro de Investigação em Tecnologias e Serviços de Saúde), Faculdade de Medicina da Universidade do Porto, Porto, Portugal jcwinck@mail.telepac.pt Wolfram Windisch Cologne Merheim Hospital, Dept of Pneumology, Kliniken der Stadt Köln gGmbH Witten/Herdecke University, Faculty of Health/School of Medicine, Cologne, Germany windischw@kliniken-koeln.de