Rakhmadian K, Yopi Triputra, Aulia Rahman. Relationship between Breast Cancer Subtypes and Serum CA 15-3 Levels with the Incidence of Pleural Effusion in Breast Cancer Patients at Dr. M. Djamil General Hospital, Padang, Indonesia. Bioscmed. 2023;7(6):3345-3350. doi:10.37275/bsm.v7i6.827