1. A case of cancer in which cells similar to those in the tumours were seen in the blood after death;Asworth;Aust Med J,1869
2. Cancer cells in the circulating blood;Engell;Acta Chir Scand,1955
3. Cancer cells in the peripheral blood: a second look;Christopherson;Acta Cytol,1965
4. The bone marrow examination in breast cancer;Ingle;Cancer,1978
5. Prognostic value of bone marrow biopsies in breast cancer;Landys;Cancer,1982