Starki, S., Loebis, B., Husada, S.M., Mahdinasari, N.N. and Efffendy, E. 2021. Calcium Levels Differences in Men with Schizophrenia Treated with Olanzapine and Risperidone in Prof. Dr. M Ildrem Psychiatric Hospital Medan. Open Access Macedonian Journal of Medical Sciences. 9, T3 (Jun. 2021), 274–279. DOI:https://doi.org/10.3889/oamjms.2021.6334.