Rangkuti, S. M., Nasril Nazir, A. H. Sutanto, Aswin Lubis, and Helena Siregar. 2021. “Measles Morbidity and Mortality in the Department of Child Health, Dr. Pirngadi General Hospital, Medan, in 1973-1977”. Paediatrica Indonesiana 20 (7-8), 139-44. https://doi.org/10.14238/pi20.7-8.1980.139-44.