Aetiologies were extracted from selected case series of bronchiectasis. Data are presented as %, unless otherwise stated. COPD: chronic obstructive pulmonary disease; CTD: connective tissue disease (and/or rheumatoid arthritis); IBD: inflammatory bowel disease; GORD: gastro-oesophageal reflux disease; ABPA: allergic bronchopulmonary asthma; EU: European Union. #: either comorbidities or aetiologies (see Quint et al. [9]). Adapted from a slide provided by J. Chalmers (University of Dundee, Dundee, UK).