Nandakishore Baikunje1, U Pratibha Bhat2, Sruthi Vinayan2. 1. Department of Pulmonary Medicine, KS Hegde Medical Academy, Nitte (Deemed to be University), Deralakatte, Mangalore, Karnataka, India. 2. Department of Microbiology, KS Hegde Medical Academy, Nitte (Deemed to be University), Deralakatte, Mangalore, Karnataka, India.