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3. “A re-evaluation of the significance of circulating cancer cells in the peripheral blood”;Christopherson,1966
4. “Carcinoma of the lung: factors which influence five-year survival with special reference to blood vessel invasion”;Collier;Ann. Surg.,1957
5. “End results in cancer of the lung: comparison of male and female patients”;Connelly;J. Nat. Cancer Inst.,1966