Senthilkumar, Subash, Arun Raaj S. A., Padmavathi K., Dhanapal C. K., and Periasamy K. “Study on Antibiotic Use Among Geriatric Patients Based on Anatomical Therapeutic Classification or Defined Daily Dose Methodology and World Health Organization-Essential Medicine List Access, Watch and Reserve Concept in Tertiary Care Hospital of South India”. International Journal of Basic & Clinical Pharmacology 9, no. 7 (June 26, 2020): 1106–1113. Accessed March 24, 2023.