University of Alberta - Division of Pulmonary Medicine, Medical Research Institute of New Zealand, Medical Research Institute of New Zealand, University Hospitals Birmingham NHS Foundation Trust - Department of Respiratory Medicine, University of Barcelona - Department of Clinical Psychology and Psychobiology, Ataturk University - Department of Chest Diseases, University of Alberta - Division of Pulmonary Medicine, Supreme Institute of Management and Technology - Department of Medical Laboratory Technology, Synergy Respiratory and Cardiac Care, Jindal Clinics, Jindal Clinics, Ataturk University - Department of Chest Diseases, Synergy Respiratory and Cardiac Care, Synergy Respiratory and Cardiac Care, Apollo Gleneagles Hospital - Department of Allergy & Immunology, Barrackpore Rashtraguru Surendrananth College - Department of Psychology, University Hospitals Birmingham NHS Foundation Trust - Department of Respiratory Medicine, University of Ferrara - Department of Environmental and Prevention Sciences, Medical Research Institute of New Zealand, University Hospitals Birmingham NHS Foundation Trust - Department of Respiratory Medicine and University of Alberta - Division of Pulmonary Medicine

ESADE Business School, Universidad Complutense de Madrid, affiliation not provided to SSRN, Universitat de Barcelona, University of Barcelona - Department of Clinical Psychology and Psychobiology, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN and Ca Foscari University of Venice