Karlsson-Parra , A., A. Nyberg, T. H. Tötterman, L. Lööf, and U. Forsum. “Primary Biliary Cirrhosis—Phenotypic Characterization of Immunocompetent Cells in Peripheral Blood and Liver Tissue”. Upsala Journal of Medical Sciences, vol. 89, no. 3, Sept. 1984, pp. 254-65, doi:10.3109/03009738409179506.