1. Department of Pulmonary Medicine, Yashoda Superspeciality Hospitals, Somajiguda, Hyderabad, Telangana, India
2. Department of Pulmonary Medicine, Nizams Institute of Medical Sciences, Hyderabad, Telangana, India
3. Department of Pathology, Yashoda Superspeciality Hospitals, Somajiguda, Hyderabad, Telangana, India