NURTJAHYANI , SUPIANA DIAN, and RETNO HANDAJANI. 2020. “Prevalence of Hepatitis B Virus Infection in Blood Donors Based on Titer Hepatitis B Surface Antigen Examination (HBsAg)”. Microbiology Indonesia 13 (4):5. https://doi.org/10.5454/mi.13.4.5.