Syahroel, R., A. Alkamar, A. Djamal, and R. Machmud. “Clinical Predictors of Childhood Streptococcal Pharyngitis”. Paediatrica Indonesiana, Vol. 48, no. 2, May 2008, pp. 114-9, doi:10.14238/pi48.2.2008.114-9.