Fernö, M. et al. 1996. Preoperative Fine Needle Aspiration from Human Breast Cancer is a Valuable Sampling Material for Progesterone Receptor and Cytometric Dna Analysis. Acta Oncologica. 35, Supp 8 (Jan. 1996), 19–25. DOI:https://doi.org/10.3109/02841869609098517.