S. Madhu, S. Augustine, Y. S. Ravi Kumar, K. Kauser M. M., S. R. V. Kumar, and B. S. Jayaraju, “Comparative study of CURB-65, Pneumonia Severity Index and IDSA/ATS scoring systems in community acquired pneumonia in an Indian tertiary care setting”, Int J Adv Med, vol. 4, no. 3, pp. 693–700, May 2017.