Hultborn, R., S. Friberg, and K. A. Hultborn. 1987. “Male Breast Carcinoma I. A Study of the Total Material Reported to the Swedish Cancer Registry 1958-1967 With Respect to Clinical and Histopathologic Parameters”. Acta Oncologica 26 (4):241-56. https://doi.org/10.3109/02841868709089970.