S., Lashmipriya, Ravindran Chetambath, Amitha Sunny, Sanjeev Shivashankaran, and Muhammed Aslam. 2019. “Aspergillus Spp. Infection As a Cause of Acute Exacerbations of Chronic Obstructive Pulmonary Disease: A Prospective Observational Study”. International Journal of Research in Medical Sciences 7 (5):1604-9. https://doi.org/10.18203/2320-6012.ijrms20191644.