The European Respiratory Society (ERS) and American Thoracic Society have joined forces to highlight what we don't know about COPD in order to steer future research programs in the right way. Professor Guy Brusselle, ERS Guidelines Director, commented: "The World Health Organization predicts that COPD will become the third leading cause of death worldwide by 2030. It is therefore a critical time for us to act on improving the management of people with the condition. This document provides us with a valuable point of reference for identifying the most effective types of research in the field of COPD. By identifying the right questions to ask, we aim to improve the diagnosis, assessment and treatment of people with COPD." Release