1. 1. Gerard R, Kasturi T, Yuvaranjan S. Bacterial agents causing acute exacerbations in COPD patients, their antibiograms to ESBL production in a tertiary care hospital, India. Int J Curr Microbiol App Sci 2013;2(11):273-82.
2. Bacterial causes of lower respiratory tract infection in patients attending central referral hospital, Gangtok with reference to antibiotic resistance pattern;PB;Journal of Evolution of Medical and Dental Sciences,2013
3. 3. Buddha BB, Rajan KD, Nabin K, et al. Retrospective audit of LRTI from sputum samples with respect to Acinetobacter spp., pseudomonas spp., and Klebsiella spp. from tertiary care hospital of Nepal. Int J Med Health Sci 2013;2(3):266-74.
4. 4. Sony S, Acharya A, Gautam A, et al. Lower respiratory tract pathogens and their antimicrobial susceptibility pattern in a medical hospital of central Nepal. International Journal of Biomedical And Advance Research 2013;4(5):335-40.
5. Gram-negative organisms as a cause of acute exacerbation of COPD;Elkorashy;Egyptian Journal of Chest Disease,2014