Skoog, L. et al. 1992. Analysis of Hormone Receptors and Proliferation Fraction in Fine-Needle Aspirates from Primary Breast Carcinomas During Chemotherapy or Tamoxifen Treatment. Acta Oncologica. 31, 2 (Jan. 1992), 139–141. DOI:https://doi.org/10.3109/02841869209088893.