Expression of heterochromatin protein 1 in the primary tumor of breast cancer patients in the presence or absence of occult metastatic cells in the bone marrow - Abreu, A. P. S.; Milani, C.; Katayama, M. L. H.; Barbosa, K. C.; Fonseca, L. Gomes da; Goes, J. C. S.; Brentani, M. M.; Folgueira, Maria Aparecida Azevedo Koike (International Journal of Biological Markers, 2008)