Tjipta, Guslihan, Dachrul Aldy, Noersida Raid, and Baren Sembiring. “Perinatal Mortality and Morbidity at Dr. Pirngadi Hospital Medan 1985-1986”. Paediatrica Indonesiana 29, no. 5-6 (March 20, 2018): 97-104. Accessed May 5, 2024. https://paediatricaindonesiana.org/index.php/paediatrica-indonesiana/article/view/1863.