Nasution, T.A. , Yunita, R., Pasaribu, A.P. and Ardinata, F.M. 2019. Effectiveness Hand Washing and Hand Rub Method in Reducing Total Bacteria Colony from Nurses in Medan. Open Access Macedonian Journal of Medical Sciences. 7, 20 (Oct. 2019), 3380–3383. DOI:https://doi.org/10.3889/oamjms.2019.427.