Varughese, J. D. and S, J. (2017) “A PROSPECTIVE OBSERVATIONAL STUDY ON HEALTH-RELATED QUALITY OF LIFE IN CHRONIC OBSTRUCTIVE PULMONARY DISEASE PATIENTS BASED ON SEVERITY”, Asian Journal of Pharmaceutical and Clinical Research, 10(8), pp. 244-247. doi: 10.22159/ajpcr.2017.v10i8.19199.