Damanik, Roslinda, Elmeida Effendy, and M. Surya Husada. 2020. “The Relation of Gene Polymorphism Interferon Gamma+874 A/T and Schizophrenia Occurred in Batak Ethnicity”. Open Access Macedonian Journal of Medical Sciences 8 (A):70-75. https://doi.org/10.3889/oamjms.2020.3975.