Kvalheim, Gunnar. “Detection of Occult Tumour Cells in Bone Marrow and Blood in Breast Cancer Patients”. Acta Oncologica 35, no. Supp 8 (January 1, 1996): 13–18. Accessed June 23, 2026. https://medicaljournalssweden.se/actaoncologica/article/view/28437.