Gusmaiyanto, D., F. Yani, E. Efrida, and R. Machmud. “Procalcitonin for Detecting Community-Acquired Bacterial Pneumonia”. Paediatrica Indonesiana, Vol. 55, no. 2, Apr. 2015, pp. 65-69, doi:10.14238/pi55.2.2015.65-69.