1. Pleural CEA, CA-15-3, CYFRA 21-1, CA-19-9, CA-125 discriminating malignant from benign pleural effusions: Diagnostic cancer biomarkers
   Farzaneh Fazli Khalaf et al, 2023, The International Journal of Biological Markers CrossRef
2. Clinical diagnostic utility of CA 15-3 for the diagnosis of malignant pleural effusion: A meta-analysis
   QIANG WU et al, 2015, Experimental and Therapeutic Medicine CrossRef
3. Breast Cancer
   Ben Davidson et al, 2018, Serous Effusions CrossRef
4. Elevated tumor markers for monitoring tumor response to immunotherapy
   Yi Yang et al, 2022, eClinicalMedicine CrossRef