2018. A CLINICAL STUDY ON RISK FACTORS AND APPROPRIATENESS OF ANTIBIOTIC PRESCRIBING FOR INFECTIVE EXACERBATION OF OBSTRUCTIVE AIRWAY DISEASE IN OLD AGED PATIENTS. International Journal of Pharmaceutical Sciences and Drug Research. 10, 4 (Jul. 2018), 283–287. DOI:https://doi.org/10.25004/IJPSDR.2018.100412.