Chakraborty, S.; Misra, S.; Jha, S.; Kodali, S.; Mandal, A. Comparative Study of Some Routinely Measured Serum Biochemical Parameters Between Acute Exacerbation of Chronic Obstructive Pulmonary Disease and Stable Chronic Obstructive Pulmonary Disease Patients in a Tertiary Care Hospital of Kolkata: An Attempt to Make Simple Prognostic Indicators. Int J Res Med Sci 2020, 8, 484-491.