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COPD: Ni nini na kwa nini inahusishwa na uvutaji sigara? | Hospitali za CARE | Dk. A. Jayachandra

Dr. A. Jayachandra, Clinical Director, Head of Department and Senior Interventional Pulmonologist, CARE Hospitals, Banjara Hills, Hyderabad, talks about what is COPD and whether is it related to smoking?