ACCUMULATED LABORATORY DATA IN B12 VITAMIN BLOOD LEVEL TIME DEPENDENCY STUDIES IN PATIENTS WITH MYELOMA, LYMPHOCYTIC LEUKEMIA AND MYELOBLASTIC LEUKEMIA IN LATVIA. ETR [Internet]. 2023 Jun. 13 [cited 2026 Mar. 11];2:34-9. Available from: https://archive-journals.rtu.lv/etr/article/view/4606