A Prospective Observational Study Evaluating the PRogression Of BronchiEctasis in COPD Patients - Results from the PROBE - COPD Study. - Venkitakrishnan R; Sudheendranath A; Vijay A; Ramachandran D; Cleetus M; Somson HT; John S (International journal of chronic obstructive pulmonary disease, 2026)