Zaini, Imam Hafidh, Widyanti Soewoto, and Ida Bagus Budhi. 2021. “The Effect of Chemotherapy on Estradiol Levels in Patients With HER 2-Overexpression Breast Cancer in Dr Moewardi General Hospital, Surakarta, Indonesia”. Open Access Macedonian Journal of Medical Sciences 9 (B):1570-74. https://doi.org/10.3889/oamjms.2021.6967.