Skoog, Lambert, Lars Erik Rutqvist, and Nils Wilking. “Analysis of Hormone Receptors and Proliferation Fraction in Fine-Needle Aspirates from Primary Breast Carcinomas During Chemotherapy or Tamoxifen Treatment”. Acta Oncologica 31, no. 2 (January 1, 1992): 139–141. Accessed May 16, 2026. https://medicaljournalssweden.se/actaoncologica/article/view/31701.