Tandon, S., Budhraja, A., Nagdeote, S. T., Sharma, K., & Shanti Dausage, C. (2016). Assessment of length of hospital stays of patients with acute exacerbations of chronic obstructive pulmonary disease. International Journal of Medical Research and Review, 4(1), 97-103. https://doi.org/10.17511/ijmrr.2016.i01.015