1. Cancer Research UK. Cancer Research UK Ovarian cancer survival statistics [Internet]. 2015. https://www.cancerresearchuk.org/health-professional/cancer-statistics/statistics-by-cancer-type/ovarian-cancer/survival.
2. Torre LA, Trabert B, DeSantis CE, Miller KD, Samimi G, Runowicz CD, et al. Ovarian cancer statistics, 2018. CA Cancer J Clin. 2018;68:284–96.
3. Cancer Research UK. Cancer Research UK Lung cancer survival statistics [Internet]. 2015. https://www.cancerresearchuk.org/health-professional/cancer-statistics/statistics-by-cancer-type/lung-cancer/survival.
4. Hüsemann Y, Geigl JB, Schubert F, Musiani P, Meyer M, Burghart E, et al. Systemic spread is an early step in breast cancer. Cancer Cell. 2008;13:58–68.
5. Attiyeh FF, Jensen M, Huvos AG, Fracchia A. Axillary micrometastasis and macrometastasis in carcinoma of the breast. Surg Gynecol Obstet. 1977;144:839–42.