Refa Perdana Mukti, and Gema Nazri Yanni. “RISK FACTORS OF CONGENITAL ANOMALIE AT HAJJ ADAM MALIK GENERAL HOSPITAL AND UNIVERSITY OF NORTH SUMATERA HOSPITAL IN 2017-2019.”. Sumatera Medical Journal, vol. 3, no. 3, Aug. 2020, doi:10.32734/sumej.v3i3.3727.